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120131330312 = 23710146745481
BaseRepresentation
bin110111111100001100…
…0101010000100001000
3102111002011021212211002
41233320120222010020
53432012110032222
6131104303154132
711451652313420
oct1577030520410
9374064255732
10120131330312
1146a47005574
121b3478a5948
13b43647a506
145b58971480
1531d1798392
hex1bf862a108

120131330312 has 64 divisors (see below), whose sum is σ = 260535450240. Its totient is φ = 50864832000.

The previous prime is 120131330237. The next prime is 120131330317. The reversal of 120131330312 is 213033131021.

It is not an unprimeable number, because it can be changed into a prime (120131330317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2618612 + ... + 2664092.

It is an arithmetic number, because the mean of its divisors is an integer number (4070866410).

Almost surely, 2120131330312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 120131330312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130267725120).

120131330312 is an abundant number, since it is smaller than the sum of its proper divisors (140404119928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120131330312 is a wasteful number, since it uses less digits than its factorization.

120131330312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46062 (or 46058 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 120131330312 its reverse (213033131021), we get a palindrome (333164461333).

The spelling of 120131330312 in words is "one hundred twenty billion, one hundred thirty-one million, three hundred thirty thousand, three hundred twelve".

Divisors: 1 2 4 7 8 14 28 56 101 202 404 467 707 808 934 1414 1868 2828 3269 3736 5656 6538 13076 26152 45481 47167 90962 94334 181924 188668 318367 330169 363848 377336 636734 660338 1273468 1320676 2546936 2641352 4593581 9187162 18374324 21239627 32155067 36748648 42479254 64310134 84958508 128620268 148677389 169917016 257240536 297354778 594709556 1189419112 2145202327 4290404654 8580809308 15016416289 17161618616 30032832578 60065665156 120131330312