316023981 has 48 divisors (see below), whose sum is σ = 536715648. Its totient is φ = 163900800.

The previous prime is 316023977. The next prime is 316023997. The reversal of 316023981 is 189320613.

It is not a de Polignac number, because 316023981 - 2² = 316023977 is a prime.

It is a super-2 number, since 2×316023981² = 199742313134176722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316023901) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 115216 + ... + 117926.

It is an arithmetic number, because the mean of its divisors is an integer number (11181576).

Almost surely, 2^316023981 is an apocalyptic number.

It is an amenable number.

316023981 is a deficient number, since it is larger than the sum of its proper divisors (220691667).

316023981 is a wasteful number, since it uses less digits than its factorization.

316023981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2802 (or 2795 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 316023981 is about 17777.0633401583. The cubic root of 316023981 is about 681.1456904403.

The spelling of 316023981 in words is "three hundred sixteen million, twenty-three thousand, nine hundred eighty-one".