117757631 has 4 divisors (see below), whose sum is σ = 122877552. Its totient is φ = 112637712.

The previous prime is 117757621. The next prime is 117757663. The reversal of 117757631 is 136757711.

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

It is a cyclic number.

It is not a de Polignac number, because 117757631 - 2⁶ = 117757567 is a prime.

It is a super-2 number, since 2×117757631² = 27733719317464322, which 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 (117757621) 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, 2559926 + ... + 2559971.

It is an arithmetic number, because the mean of its divisors is an integer number (30719388).

Almost surely, 2^117757631 is an apocalyptic number.

117757631 is a deficient number, since it is larger than the sum of its proper divisors (5119921).

117757631 is an equidigital number, since it uses as much as digits as its factorization.

117757631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5119920.

The product of its digits is 30870, while the sum is 38.

The square root of 117757631 is about 10851.6188193283. The cubic root of 117757631 is about 490.1507671559.

The spelling of 117757631 in words is "one hundred seventeen million, seven hundred fifty-seven thousand, six hundred thirty-one".