318312911 has 4 divisors (see below), whose sum is σ = 363786192. Its totient is φ = 272839632.

The previous prime is 318312901. The next prime is 318312931. The reversal of 318312911 is 119213813.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 119213813 = 83 ⋅1436311.

It is a cyclic number.

It is not a de Polignac number, because 318312911 - 2¹⁰ = 318311887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318312901) 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, 22736630 + ... + 22736643.

It is an arithmetic number, because the mean of its divisors is an integer number (90946548).

Almost surely, 2^318312911 is an apocalyptic number.

318312911 is a deficient number, since it is larger than the sum of its proper divisors (45473281).

318312911 is an equidigital number, since it uses as much as digits as its factorization.

318312911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45473280.

The product of its digits is 1296, while the sum is 29.

The square root of 318312911 is about 17841.3259316677. The cubic root of 318312911 is about 682.7862260217.

The spelling of 318312911 in words is "three hundred eighteen million, three hundred twelve thousand, nine hundred eleven".