289502631 has 12 divisors (see below), whose sum is σ = 456186120. Its totient is φ = 175456080.

The previous prime is 289502627. The next prime is 289502641. The reversal of 289502631 is 136205982.

It is not a de Polignac number, because 289502631 - 2² = 289502627 is a prime.

It is a super-2 number, since 2×289502631² = 167623546711844322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289502641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1462036 + ... + 1462233.

It is an arithmetic number, because the mean of its divisors is an integer number (38015510).

Almost surely, 2^289502631 is an apocalyptic number.

289502631 is a deficient number, since it is larger than the sum of its proper divisors (166683489).

289502631 is a wasteful number, since it uses less digits than its factorization.

289502631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2924286 (or 2924283 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 289502631 is about 17014.7768424978. The cubic root of 289502631 is about 661.5319715866.

The spelling of 289502631 in words is "two hundred eighty-nine million, five hundred two thousand, six hundred thirty-one".