345626631 has 12 divisors (see below), whose sum is σ = 570558352. Its totient is φ = 197500896.

The previous prime is 345626627. The next prime is 345626641. The reversal of 345626631 is 136626543.

345626631 is a `hidden beast` number, since 3 + 4 + 562 + 66 + 31 = 666.

It is not a de Polignac number, because 345626631 - 2² = 345626627 is a prime.

It is a super-2 number, since 2×345626631² = 238915536112820322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345626641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2743006 + ... + 2743131.

Almost surely, 2^345626631 is an apocalyptic number.

345626631 is a deficient number, since it is larger than the sum of its proper divisors (224931721).

345626631 is a wasteful number, since it uses less digits than its factorization.

345626631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5486150 (or 5486147 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

The square root of 345626631 is about 18591.0363078555. The cubic root of 345626631 is about 701.7822820591.

The spelling of 345626631 in words is "three hundred forty-five million, six hundred twenty-six thousand, six hundred thirty-one".