3121031214312 has 64 divisors (see below), whose sum is σ = 8532218419200. Its totient is φ = 943509800640.

The previous prime is 3121031214311. The next prime is 3121031214341. The reversal of 3121031214312 is 2134121301213.

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

It is not an unprimeable number, because it can be changed into a prime (3121031214311) 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, 13996888 + ... + 14218119.

It is an arithmetic number, because the mean of its divisors is an integer number (133315912800).

Almost surely, 2^{3121031214312} is an apocalyptic number.

It is an amenable number.

3121031214312 is an abundant number, since it is smaller than the sum of its proper divisors (5411187204888).

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

3121031214312 is a wasteful number, since it uses less digits than its factorization.

3121031214312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28215446 (or 28215442 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

Adding to 3121031214312 its reverse (2134121301213), we get a palindrome (5255152515525).

The spelling of 3121031214312 in words is "three trillion, one hundred twenty-one billion, thirty-one million, two hundred fourteen thousand, three hundred twelve".