289091302631 has 4 divisors (see below), whose sum is σ = 306096673392. Its totient is φ = 272085931872.

The previous prime is 289091302627. The next prime is 289091302673. The reversal of 289091302631 is 136203190982.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 289091302631 - 2² = 289091302627 is a prime.

It is a super-2 number, since 2×289091302631² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289091302681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8502685355 + ... + 8502685388.

It is an arithmetic number, because the mean of its divisors is an integer number (76524168348).

Almost surely, 2^289091302631 is an apocalyptic number.

289091302631 is a deficient number, since it is larger than the sum of its proper divisors (17005370761).

289091302631 is a wasteful number, since it uses less digits than its factorization.

289091302631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17005370760.

The product of its (nonzero) digits is 139968, while the sum is 44.

The spelling of 289091302631 in words is "two hundred eighty-nine billion, ninety-one million, three hundred two thousand, six hundred thirty-one".