1031312120 has 32 divisors (see below), whose sum is σ = 2321485920. Its totient is φ = 412341120.

The previous prime is 1031312083. The next prime is 1031312131. The reversal of 1031312120 is 212131301.

It is a junction number, because it is equal to n+sod(n) for n = 1031312095 and 1031312104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118229 + ... + 126651.

It is an arithmetic number, because the mean of its divisors is an integer number (72546435).

Almost surely, 2^1031312120 is an apocalyptic number.

1031312120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031312120 is an abundant number, since it is smaller than the sum of its proper divisors (1290173800).

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

1031312120 is a wasteful number, since it uses less digits than its factorization.

1031312120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11495 (or 11491 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1031312120 is about 32114.0486391859. The cubic root of 1031312120 is about 1010.3302909567.

Adding to 1031312120 its reverse (212131301), we get a palindrome (1243443421).

The spelling of 1031312120 in words is "one billion, thirty-one million, three hundred twelve thousand, one hundred twenty".