120516631 has 4 divisors (see below), whose sum is σ = 120542632. Its totient is φ = 120490632.

The previous prime is 120516593. The next prime is 120516637. The reversal of 120516631 is 136615021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136615021 = 809 ⋅168869.

It is a cyclic number.

It is not a de Polignac number, because 120516631 - 2⁹ = 120516119 is a prime.

It is a super-2 number, since 2×120516631² = 29048516695180322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120516596 and 120516605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120516637) 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, 3945 + ... + 16018.

It is an arithmetic number, because the mean of its divisors is an integer number (30135658).

Almost surely, 2^120516631 is an apocalyptic number.

120516631 is a deficient number, since it is larger than the sum of its proper divisors (26001).

120516631 is an equidigital number, since it uses as much as digits as its factorization.

120516631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26000.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 120516631 is about 10978.0066952066. The cubic root of 120516631 is about 493.9492468088.

The spelling of 120516631 in words is "one hundred twenty million, five hundred sixteen thousand, six hundred thirty-one".