120113631 has 16 divisors (see below), whose sum is σ = 194123520. Its totient is φ = 72795960.

The previous prime is 120113629. The next prime is 120113639. The reversal of 120113631 is 136311021.

120113631 is a `hidden beast` number, since 1 + 20 + 1 + 13 + 631 = 666.

It is not a de Polignac number, because 120113631 - 2¹ = 120113629 is a prime.

It is a super-2 number, since 2×120113631² = 28854568704008322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120113639) 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, 201915 + ... + 202508.

It is an arithmetic number, because the mean of its divisors is an integer number (12132720).

Almost surely, 2^120113631 is an apocalyptic number.

120113631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

120113631 is a deficient number, since it is larger than the sum of its proper divisors (74009889).

120113631 is a wasteful number, since it uses less digits than its factorization.

120113631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404443 (or 404437 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 120113631 is about 10959.6364447002. The cubic root of 120113631 is about 493.3980536083.

Adding to 120113631 its reverse (136311021), we get a palindrome (256424652).

The spelling of 120113631 in words is "one hundred twenty million, one hundred thirteen thousand, six hundred thirty-one".