354631 has 6 divisors (see below), whose sum is σ = 364560. Its totient is φ = 344916.

The previous prime is 354619. The next prime is 354643. The reversal of 354631 is 136453.

354631 = 24² + 25² + ... + 102².

It is an interprime number because it is at equal distance from previous prime (354619) and next prime (354643).

It is not a de Polignac number, because 354631 - 2¹³ = 346439 is a prime.

It is a super-2 number, since 2×354631² = 251526292322, which contains 22 as substring.

It is a Duffinian number.

354631 is a lucky number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (354661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4450 + ... + 4528.

It is an arithmetic number, because the mean of its divisors is an integer number (60760).

2³⁵⁴⁶³¹ is an apocalyptic number.

354631 is a deficient number, since it is larger than the sum of its proper divisors (9929).

354631 is an frugal number, since it uses more digits than its factorization.

354631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 146 counting only the distinct ones).

The product of its digits is 1080, while the sum is 22.

The square root of 354631 is about 595.5090259601. The cubic root of 354631 is about 70.7824458805.

The spelling of 354631 in words is "three hundred fifty-four thousand, six hundred thirty-one".