312121313032 has 64 divisors (see below), whose sum is σ = 631575000000. Its totient is φ = 144121835520.

The previous prime is 312121313017. The next prime is 312121313039. The reversal of 312121313032 is 230313121213.

It is a junction number, because it is equal to n+sod(n) for n = 312121312994 and 312121313012.

It is not an unprimeable number, because it can be changed into a prime (312121313039) 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, 7763719 + ... + 7803817.

It is an arithmetic number, because the mean of its divisors is an integer number (9868359375).

Almost surely, 2^312121313032 is an apocalyptic number.

It is an amenable number.

312121313032 is an abundant number, since it is smaller than the sum of its proper divisors (319453686968).

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

312121313032 is a wasteful number, since it uses less digits than its factorization.

312121313032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41414 (or 41410 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 312121313032 its reverse (230313121213), we get a palindrome (542434434245).

The spelling of 312121313032 in words is "three hundred twelve billion, one hundred twenty-one million, three hundred thirteen thousand, thirty-two".