316256113326021 has 32 divisors (see below), whose sum is σ = 476170585251840. Its totient is φ = 184970778129600.

The previous prime is 316256113326017. The next prime is 316256113326037. The reversal of 316256113326021 is 120623311652613.

It is a happy number.

It is not a de Polignac number, because 316256113326021 - 2² = 316256113326017 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316256113326061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 430197870 + ... + 430932383.

It is an arithmetic number, because the mean of its divisors is an integer number (14880330789120).

Almost surely, 2^{316256113326021} is an apocalyptic number.

316256113326021 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

316256113326021 is a deficient number, since it is larger than the sum of its proper divisors (159914471925819).

316256113326021 is a wasteful number, since it uses less digits than its factorization.

316256113326021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861130657.

The product of its (nonzero) digits is 233280, while the sum is 42.

Adding to 316256113326021 its reverse (120623311652613), we get a palindrome (436879424978634).

The spelling of 316256113326021 in words is "three hundred sixteen trillion, two hundred fifty-six billion, one hundred thirteen million, three hundred twenty-six thousand, twenty-one".