256031606122351 has 8 divisors (see below), whose sum is σ = 258567162542784. Its totient is φ = 253496061271200.

The previous prime is 256031606122301. The next prime is 256031606122361. The reversal of 256031606122351 is 153221606130652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 256031606122351 - 2²⁹ = 256031069251439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256031606122298 and 256031606122307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256031606122301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45591946 + ... + 50898808.

It is an arithmetic number, because the mean of its divisors is an integer number (32320895317848).

Almost surely, 2^{256031606122351} is an apocalyptic number.

256031606122351 is a deficient number, since it is larger than the sum of its proper divisors (2535556420433).

256031606122351 is a wasteful number, since it uses less digits than its factorization.

256031606122351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5784641.

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 256031606122351 in words is "two hundred fifty-six trillion, thirty-one billion, six hundred six million, one hundred twenty-two thousand, three hundred fifty-one".