120631518 has 96 divisors (see below), whose sum is σ = 315544320. Its totient is φ = 33825600.

The previous prime is 120631517. The next prime is 120631523. The reversal of 120631518 is 815136021.

120631518 is a `hidden beast` number, since 1 + 20 + 631 + 5 + 1 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 120631491 and 120631500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120631517) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 200418 + ... + 201018.

It is an arithmetic number, because the mean of its divisors is an integer number (3286920).

Almost surely, 2^120631518 is an apocalyptic number.

120631518 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 120631518, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157772160).

120631518 is an abundant number, since it is smaller than the sum of its proper divisors (194912802).

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

120631518 is an equidigital number, since it uses as much as digits as its factorization.

120631518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684 (or 672 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 120631518 is about 10983.2380471335. The cubic root of 120631518 is about 494.1061555101.

Adding to 120631518 its reverse (815136021), we get a palindrome (935767539).

The spelling of 120631518 in words is "one hundred twenty million, six hundred thirty-one thousand, five hundred eighteen".