316333993 has 4 divisors (see below), whose sum is σ = 316486800. Its totient is φ = 316181188.

The previous prime is 316333957. The next prime is 316334027. The reversal of 316333993 is 399333613.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 316333993 - 2²⁵ = 282779561 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (316331993) 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, 73255 + ... + 77452.

It is an arithmetic number, because the mean of its divisors is an integer number (79121700).

Almost surely, 2^316333993 is an apocalyptic number.

It is an amenable number.

316333993 is a deficient number, since it is larger than the sum of its proper divisors (152807).

316333993 is a wasteful number, since it uses less digits than its factorization.

316333993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152806.

The product of its digits is 118098, while the sum is 40.

The square root of 316333993 is about 17785.7806407253. The cubic root of 316333993 is about 681.3683468834.

The spelling of 316333993 in words is "three hundred sixteen million, three hundred thirty-three thousand, nine hundred ninety-three".