318472831 has 2 divisors, whose sum is σ = 318472832. Its totient is φ = 318472830.

The previous prime is 318472757. The next prime is 318472853. The reversal of 318472831 is 138274813.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 318472831 - 2¹³ = 318464639 is a prime.

It is a super-2 number, since 2×318472831² = 202849888170309122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318472031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159236415 + 159236416.

It is an arithmetic number, because the mean of its divisors is an integer number (159236416).

Almost surely, 2^318472831 is an apocalyptic number.

318472831 is a deficient number, since it is larger than the sum of its proper divisors (1).

318472831 is an equidigital number, since it uses as much as digits as its factorization.

318472831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 37.

The square root of 318472831 is about 17845.8070985876. The cubic root of 318472831 is about 682.9005505210.

The spelling of 318472831 in words is "three hundred eighteen million, four hundred seventy-two thousand, eight hundred thirty-one".