312111012312 has 48 divisors (see below), whose sum is σ = 922146175080. Its totient is φ = 94579094400.

The previous prime is 312111012229. The next prime is 312111012319. The reversal of 312111012312 is 213210111213.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312111012319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 197038989 + ... + 197040572.

Almost surely, 2^312111012312 is an apocalyptic number.

It is an amenable number.

312111012312 is an abundant number, since it is smaller than the sum of its proper divisors (610035162768).

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

312111012312 is a wasteful number, since it uses less digits than its factorization.

312111012312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394079584 (or 394079577 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 312111012312 its reverse (213210111213), we get a palindrome (525321123525).

The spelling of 312111012312 in words is "three hundred twelve billion, one hundred eleven million, twelve thousand, three hundred twelve".