312131320102 has 16 divisors (see below), whose sum is σ = 535095293472. Its totient is φ = 133767308160.

The previous prime is 312131320097. The next prime is 312131320121. The reversal of 312131320102 is 201023131213.

It is a self number, because there is not a number n which added to its sum of digits gives 312131320102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377452 + ... + 875632.

It is an arithmetic number, because the mean of its divisors is an integer number (33443455842).

Almost surely, 2^312131320102 is an apocalyptic number.

312131320102 is a deficient number, since it is larger than the sum of its proper divisors (222963973370).

312131320102 is a wasteful number, since it uses less digits than its factorization.

312131320102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542943.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 312131320102 its reverse (201023131213), we get a palindrome (513154451315).

The spelling of 312131320102 in words is "three hundred twelve billion, one hundred thirty-one million, three hundred twenty thousand, one hundred two".