312131340231042 has 32 divisors (see below), whose sum is σ = 657135369558720. Its totient is φ = 98565277870080.

The previous prime is 312131340231019. The next prime is 312131340231043. The reversal of 312131340231042 is 240132043131213.

It is not an unprimeable number, because it can be changed into a prime (312131340231043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30421459 + ... + 39366582.

It is an arithmetic number, because the mean of its divisors is an integer number (20535480298710).

Almost surely, 2^{312131340231042} is an apocalyptic number.

312131340231042 is an abundant number, since it is smaller than the sum of its proper divisors (345004029327678).

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

312131340231042 is a wasteful number, since it uses less digits than its factorization.

312131340231042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69827298.

The product of its (nonzero) digits is 10368, while the sum is 30.

Adding to 312131340231042 its reverse (240132043131213), we get a palindrome (552263383362255).

The spelling of 312131340231042 in words is "three hundred twelve trillion, one hundred thirty-one billion, three hundred forty million, two hundred thirty-one thousand, forty-two".