312131112023042 has 16 divisors (see below), whose sum is σ = 521598410013240. Its totient is φ = 139092909336192.

The previous prime is 312131112023009. The next prime is 312131112023113. The reversal of 312131112023042 is 240320211131213.

It can be written as a sum of positive squares in 4 ways, for example, as 236539755262801 + 75591356760241 = 15379849^2 + 8694329^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206983495283 + ... + 206983496790.

Almost surely, 2^{312131112023042} is an apocalyptic number.

312131112023042 is a deficient number, since it is larger than the sum of its proper divisors (209467297990198).

312131112023042 is a wasteful number, since it uses less digits than its factorization.

312131112023042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413966992117.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 312131112023042 its reverse (240320211131213), we get a palindrome (552451323154255).

The spelling of 312131112023042 in words is "three hundred twelve trillion, one hundred thirty-one billion, one hundred twelve million, twenty-three thousand, forty-two".