312013231121112 has 32 divisors (see below), whose sum is σ = 799058274824880. Its totient is φ = 101467717437440.

The previous prime is 312013231121093. The next prime is 312013231121117. The reversal of 312013231121112 is 211121132310213.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312013231121117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158543307513 + ... + 158543309480.

Almost surely, 2^{312013231121112} is an apocalyptic number.

It is an amenable number.

312013231121112 is an abundant number, since it is smaller than the sum of its proper divisors (487045043703768).

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

312013231121112 is a wasteful number, since it uses less digits than its factorization.

312013231121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317086617043 (or 317086617039 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 312013231121112 its reverse (211121132310213), we get a palindrome (523134363431325).

The spelling of 312013231121112 in words is "three hundred twelve trillion, thirteen billion, two hundred thirty-one million, one hundred twenty-one thousand, one hundred twelve".