116316391 has 2 divisors, whose sum is σ = 116316392. Its totient is φ = 116316390.

The previous prime is 116316367. The next prime is 116316439. The reversal of 116316391 is 193613611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 116316391 - 2²¹ = 114219239 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116316191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58158195 + 58158196.

It is an arithmetic number, because the mean of its divisors is an integer number (58158196).

Almost surely, 2^116316391 is an apocalyptic number.

116316391 is a deficient number, since it is larger than the sum of its proper divisors (1).

116316391 is an equidigital number, since it uses as much as digits as its factorization.

116316391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2916, while the sum is 31.

The square root of 116316391 is about 10785.0076958712. The cubic root of 116316391 is about 488.1428954799.

The spelling of 116316391 in words is "one hundred sixteen million, three hundred sixteen thousand, three hundred ninety-one".