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120131320 = 23511812543
BaseRepresentation
bin1110010100100…
…00111011111000
322101001022012011
413022100323320
5221223200240
615530455304
72656046041
oct712207370
9271038164
10120131320
11618a1491
1234294534
131bb7192a
1411d518c8
15a82e6ea
hex7290ef8

120131320 has 32 divisors (see below), whose sum is σ = 270630720. Its totient is φ = 47992960.

The previous prime is 120131279. The next prime is 120131383. The reversal of 120131320 is 23131021.

It is a super-3 number, since 3×1201313203 (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 120131320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45969 + ... + 48511.

It is an arithmetic number, because the mean of its divisors is an integer number (8457210).

Almost surely, 2120131320 is an apocalyptic number.

120131320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120131320 is an abundant number, since it is smaller than the sum of its proper divisors (150499400).

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

120131320 is a wasteful number, since it uses less digits than its factorization.

120131320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3735 (or 3731 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 120131320 is about 10960.4434216869. The cubic root of 120131320 is about 493.4222731457.

Adding to 120131320 its reverse (23131021), we get a palindrome (143262341).

The spelling of 120131320 in words is "one hundred twenty million, one hundred thirty-one thousand, three hundred twenty".

Divisors: 1 2 4 5 8 10 20 40 1181 2362 2543 4724 5086 5905 9448 10172 11810 12715 20344 23620 25430 47240 50860 101720 3003283 6006566 12013132 15016415 24026264 30032830 60065660 120131320