256410422231 has 4 divisors (see below), whose sum is σ = 256426587912. Its totient is φ = 256394256552.

The previous prime is 256410422189. The next prime is 256410422249. The reversal of 256410422231 is 132224014652.

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 256410422231 - 2¹⁴ = 256410405847 is a prime.

It is a super-2 number, since 2×256410422231² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256410422831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8059025 + ... + 8090778.

It is an arithmetic number, because the mean of its divisors is an integer number (64106646978).

Almost surely, 2^256410422231 is an apocalyptic number.

256410422231 is a deficient number, since it is larger than the sum of its proper divisors (16165681).

256410422231 is a wasteful number, since it uses less digits than its factorization.

256410422231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16165680.

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 256410422231 its reverse (132224014652), we get a palindrome (388634436883).

The spelling of 256410422231 in words is "two hundred fifty-six billion, four hundred ten million, four hundred twenty-two thousand, two hundred thirty-one".