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231302031212 = 22717656973973
BaseRepresentation
bin1101011101101010101…
…1001110011101101100
3211010000211120121220202
43113122223032131230
512242201304444322
6254131513133032
722465610553140
oct3273253163554
9733024517822
10231302031212
118a104a6a58a
12389b26ba178
1318a72380935
14b2a3419220
15603b540292
hex35daace76c

231302031212 has 48 divisors (see below), whose sum is σ = 489897253440. Its totient is φ = 93282834432.

The previous prime is 231302031187. The next prime is 231302031239. The reversal of 231302031212 is 212130203132.

231302031212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3089858 + ... + 3163830.

It is an arithmetic number, because the mean of its divisors is an integer number (10206192780).

Almost surely, 2231302031212 is an apocalyptic number.

It is an amenable number.

231302031212 is an abundant number, since it is smaller than the sum of its proper divisors (258595222228).

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

231302031212 is a wasteful number, since it uses less digits than its factorization.

231302031212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80570 (or 80568 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 231302031212 its reverse (212130203132), we get a palindrome (443432234344).

The spelling of 231302031212 in words is "two hundred thirty-one billion, three hundred two million, thirty-one thousand, two hundred twelve".

Divisors: 1 2 4 7 14 17 28 34 68 119 238 476 6569 13138 26276 45983 73973 91966 111673 147946 183932 223346 295892 446692 517811 781711 1035622 1257541 1563422 2071244 2515082 3126844 5030164 8802787 17605574 35211148 485928637 971857274 1943714548 3401500459 6803000918 8260786829 13606001836 16521573658 33043147316 57825507803 115651015606 231302031212