120031312 has 40 divisors (see below), whose sum is σ = 236509416. Its totient is φ = 59006976.

The previous prime is 120031283. The next prime is 120031321. The reversal of 120031312 is 213130021.

It can be written as a sum of positive squares in 4 ways, for example, as 8433216 + 111598096 = 2904^2 + 10564^2 .

It is a junction number, because it is equal to n+sod(n) for n = 120031292 and 120031301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 356008 + ... + 356344.

Almost surely, 2^120031312 is an apocalyptic number.

It is an amenable number.

120031312 is a deficient number, since it is larger than the sum of its proper divisors (116478104).

120031312 is a wasteful number, since it uses less digits than its factorization.

120031312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655 (or 649 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 120031312 is about 10955.8802476113. The cubic root of 120031312 is about 493.2853122643.

Adding to 120031312 its reverse (213130021), we get a palindrome (333161333).

The spelling of 120031312 in words is "one hundred twenty million, thirty-one thousand, three hundred twelve".