120838631 has 4 divisors (see below), whose sum is σ = 121968072. Its totient is φ = 119709192.

The previous prime is 120838541. The next prime is 120838649. The reversal of 120838631 is 136838021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120838631 is a prime.

It is a super-2 number, since 2×120838631² = 29203949483908322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120838681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 564560 + ... + 564773.

It is an arithmetic number, because the mean of its divisors is an integer number (30492018).

Almost surely, 2^120838631 is an apocalyptic number.

120838631 is a deficient number, since it is larger than the sum of its proper divisors (1129441).

120838631 is a wasteful number, since it uses less digits than its factorization.

120838631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129440.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 120838631 is about 10992.6625982971. The cubic root of 120838631 is about 494.3887718022.

The spelling of 120838631 in words is "one hundred twenty million, eight hundred thirty-eight thousand, six hundred thirty-one".