316991193 has 16 divisors (see below), whose sum is σ = 450266880. Its totient is φ = 197789904.

The previous prime is 316991161. The next prime is 316991203. The reversal of 316991193 is 391199613.

It is not a de Polignac number, because 316991193 - 2⁵ = 316991161 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (316991393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28771 + ... + 38232.

It is an arithmetic number, because the mean of its divisors is an integer number (28141680).

Almost surely, 2^316991193 is an apocalyptic number.

It is an amenable number.

316991193 is a deficient number, since it is larger than the sum of its proper divisors (133275687).

316991193 is a wasteful number, since it uses less digits than its factorization.

316991193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67108.

The product of its digits is 39366, while the sum is 42.

The square root of 316991193 is about 17804.2464878467. The cubic root of 316991193 is about 681.8398796505.

The spelling of 316991193 in words is "three hundred sixteen million, nine hundred ninety-one thousand, one hundred ninety-three".