312330021132 has 48 divisors (see below), whose sum is σ = 752554880000. Its totient is φ = 100714639680.

The previous prime is 312330021131. The next prime is 312330021139. The reversal of 312330021132 is 231120033213.

It is a super-2 number, since 2×312330021132² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312330021099 and 312330021108.

It is not an unprimeable number, because it can be changed into a prime (312330021131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 869919 + ... + 1175337.

Almost surely, 2^312330021132 is an apocalyptic number.

It is an amenable number.

312330021132 is an abundant number, since it is smaller than the sum of its proper divisors (440224858868).

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

312330021132 is a wasteful number, since it uses less digits than its factorization.

312330021132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308206 (or 308204 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 312330021132 its reverse (231120033213), we get a palindrome (543450054345).

The spelling of 312330021132 in words is "three hundred twelve billion, three hundred thirty million, twenty-one thousand, one hundred thirty-two".