117810631 has 4 divisors (see below), whose sum is σ = 118003432. Its totient is φ = 117617832.

The previous prime is 117810619. The next prime is 117810647. The reversal of 117810631 is 136018711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136018711 = 23 ⋅5913857.

It is a cyclic number.

It is not a de Polignac number, because 117810631 - 2¹⁹ = 117286343 is a prime.

It is a super-2 number, since 2×117810631² = 27758689553236322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117810631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117810601) 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, 95481 + ... + 96706.

It is an arithmetic number, because the mean of its divisors is an integer number (29500858).

Almost surely, 2^117810631 is an apocalyptic number.

117810631 is a deficient number, since it is larger than the sum of its proper divisors (192801).

117810631 is an equidigital number, since it uses as much as digits as its factorization.

117810631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192800.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 117810631 is about 10854.0605765769. The cubic root of 117810631 is about 490.2242913203.

The spelling of 117810631 in words is "one hundred seventeen million, eight hundred ten thousand, six hundred thirty-one".