116491631 has 2 divisors, whose sum is σ = 116491632. Its totient is φ = 116491630.

The previous prime is 116491621. The next prime is 116491643. The reversal of 116491631 is 136194611.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116491631 is a prime.

It is a super-2 number, since 2×116491631² = 27140600186080322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116491621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58245815 + 58245816.

It is an arithmetic number, because the mean of its divisors is an integer number (58245816).

Almost surely, 2^116491631 is an apocalyptic number.

116491631 is a deficient number, since it is larger than the sum of its proper divisors (1).

116491631 is an equidigital number, since it uses as much as digits as its factorization.

116491631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 32.

The square root of 116491631 is about 10793.1288790600. The cubic root of 116491631 is about 488.3879146541.

The spelling of 116491631 in words is "one hundred sixteen million, four hundred ninety-one thousand, six hundred thirty-one".