312021132412 has 24 divisors (see below), whose sum is σ = 595746149040. Its totient is φ = 141811253760.

The previous prime is 312021132377. The next prime is 312021132413. The reversal of 312021132412 is 214231120213.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312021132413) 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, 27573 + ... + 790444.

It is an arithmetic number, because the mean of its divisors is an integer number (24822756210).

Almost surely, 2^312021132412 is an apocalyptic number.

It is an amenable number.

312021132412 is a deficient number, since it is larger than the sum of its proper divisors (283725016628).

312021132412 is a wasteful number, since it uses less digits than its factorization.

312021132412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 826701 (or 826699 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 312021132412 its reverse (214231120213), we get a palindrome (526252252625).

The spelling of 312021132412 in words is "three hundred twelve billion, twenty-one million, one hundred thirty-two thousand, four hundred twelve".