116651631 has 4 divisors (see below), whose sum is σ = 155535512. Its totient is φ = 77767752.

The previous prime is 116651617. The next prime is 116651663. The reversal of 116651631 is 136156611.

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

It is not a de Polignac number, because 116651631 - 2⁷ = 116651503 is a prime.

It is a super-2 number, since 2×116651631² = 27215206029920322, 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 (116651681) 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, 19441936 + ... + 19441941.

It is an arithmetic number, because the mean of its divisors is an integer number (38883878).

Almost surely, 2^116651631 is an apocalyptic number.

116651631 is a deficient number, since it is larger than the sum of its proper divisors (38883881).

116651631 is an equidigital number, since it uses as much as digits as its factorization.

116651631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38883880.

The product of its digits is 3240, while the sum is 30.

The square root of 116651631 is about 10800.5384587992. The cubic root of 116651631 is about 488.6114108749.

The spelling of 116651631 in words is "one hundred sixteen million, six hundred fifty-one thousand, six hundred thirty-one".