345811556231 has 2 divisors, whose sum is σ = 345811556232. Its totient is φ = 345811556230.

The previous prime is 345811556227. The next prime is 345811556281. The reversal of 345811556231 is 132655118543.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 345811556231 - 2² = 345811556227 is a prime.

It is a super-2 number, since 2×345811556231² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345811556281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172905778115 + 172905778116.

It is an arithmetic number, because the mean of its divisors is an integer number (172905778116).

Almost surely, 2^345811556231 is an apocalyptic number.

345811556231 is a deficient number, since it is larger than the sum of its proper divisors (1).

345811556231 is an equidigital number, since it uses as much as digits as its factorization.

345811556231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432000, while the sum is 44.

The spelling of 345811556231 in words is "three hundred forty-five billion, eight hundred eleven million, five hundred fifty-six thousand, two hundred thirty-one".