256734246010631 has 4 divisors (see below), whose sum is σ = 256737095316072. Its totient is φ = 256731396705192.

The previous prime is 256734246010559. The next prime is 256734246010651. The reversal of 256734246010631 is 136010642437652.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 256734246010631 - 2¹⁰ = 256734246009607 is a prime.

It is a super-2 number, since 2×256734246010631² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 256734246010631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256734246010651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1424517560 + ... + 1424697773.

It is an arithmetic number, because the mean of its divisors is an integer number (64184273829018).

Almost surely, 2^{256734246010631} is an apocalyptic number.

256734246010631 is a deficient number, since it is larger than the sum of its proper divisors (2849305441).

256734246010631 is an equidigital number, since it uses as much as digits as its factorization.

256734246010631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2849305440.

The product of its (nonzero) digits is 4354560, while the sum is 50.

The spelling of 256734246010631 in words is "two hundred fifty-six trillion, seven hundred thirty-four billion, two hundred forty-six million, ten thousand, six hundred thirty-one".