316980509 has 4 divisors (see below), whose sum is σ = 322353120. Its totient is φ = 311607900.

The previous prime is 316980493. The next prime is 316980523. The reversal of 316980509 is 905089613.

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, and also an emirpimes, since its reverse is a distinct semiprime: 905089613 = 2383 ⋅379811.

It is a cyclic number.

It is not a de Polignac number, because 316980509 - 2⁴ = 316980493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316980409) 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, 2686217 + ... + 2686334.

It is an arithmetic number, because the mean of its divisors is an integer number (80588280).

Almost surely, 2^316980509 is an apocalyptic number.

It is an amenable number.

316980509 is a deficient number, since it is larger than the sum of its proper divisors (5372611).

316980509 is an equidigital number, since it uses as much as digits as its factorization.

316980509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5372610.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 316980509 is about 17803.9464445386. The cubic root of 316980509 is about 681.8322192283.

The spelling of 316980509 in words is "three hundred sixteen million, nine hundred eighty thousand, five hundred nine".