316912819 has 4 divisors (see below), whose sum is σ = 316995544. Its totient is φ = 316830096.

The previous prime is 316912789. The next prime is 316912823. The reversal of 316912819 is 918219613.

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

It is a cyclic number.

It is not a de Polignac number, because 316912819 - 2¹⁹ = 316388531 is a prime.

It is a super-2 number, since 2×316912819² = 200867469693053522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (316912619) 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, 35322 + ... + 43375.

It is an arithmetic number, because the mean of its divisors is an integer number (79248886).

Almost surely, 2^316912819 is an apocalyptic number.

316912819 is a deficient number, since it is larger than the sum of its proper divisors (82725).

316912819 is an equidigital number, since it uses as much as digits as its factorization.

316912819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82724.

The product of its digits is 23328, while the sum is 40.

The square root of 316912819 is about 17802.0453600141. The cubic root of 316912819 is about 681.7836815346.

The spelling of 316912819 in words is "three hundred sixteen million, nine hundred twelve thousand, eight hundred nineteen".