120989631 has 32 divisors (see below), whose sum is σ = 187532800. Its totient is φ = 67962240.

The previous prime is 120989611. The next prime is 120989633. The reversal of 120989631 is 136989021.

It is not a de Polignac number, because 120989631 - 2⁵ = 120989599 is a prime.

It is a super-2 number, since 2×120989631² = 29276981619032322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 120989631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120989633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 528225 + ... + 528453.

It is an arithmetic number, because the mean of its divisors is an integer number (5860400).

Almost surely, 2^120989631 is an apocalyptic number.

120989631 is a deficient number, since it is larger than the sum of its proper divisors (66543169).

120989631 is a wasteful number, since it uses less digits than its factorization.

120989631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 120989631 is about 10999.5286717204. The cubic root of 120989631 is about 494.5946155519.

The spelling of 120989631 in words is "one hundred twenty million, nine hundred eighty-nine thousand, six hundred thirty-one".