354440631 has 16 divisors (see below), whose sum is σ = 478764000. Its totient is φ = 233215488.

The previous prime is 354440621. The next prime is 354440657. The reversal of 354440631 is 136044453.

It is not a de Polignac number, because 354440631 - 2⁷ = 354440503 is a prime.

It is a super-2 number, since 2×354440631² = 251256321807356322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354440621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 228045 + ... + 229593.

It is an arithmetic number, because the mean of its divisors is an integer number (29922750).

Almost surely, 2^354440631 is an apocalyptic number.

354440631 is a deficient number, since it is larger than the sum of its proper divisors (124323369).

354440631 is a wasteful number, since it uses less digits than its factorization.

354440631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2498.

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 354440631 is about 18826.5937173988. The cubic root of 354440631 is about 707.6977806963.

The spelling of 354440631 in words is "three hundred fifty-four million, four hundred forty thousand, six hundred thirty-one".