318483881 has 2 divisors, whose sum is σ = 318483882. Its totient is φ = 318483880.

The previous prime is 318483857. The next prime is 318483911. The reversal of 318483881 is 188384813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201498025 + 116985856 = 14195^2 + 10816^2 .

It is a cyclic number.

It is not a de Polignac number, because 318483881 - 2⁶ = 318483817 is a prime.

It is a super-2 number, since 2×318483881² = 202863964913644322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (318483821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159241940 + 159241941.

It is an arithmetic number, because the mean of its divisors is an integer number (159241941).

Almost surely, 2^318483881 is an apocalyptic number.

It is an amenable number.

318483881 is a deficient number, since it is larger than the sum of its proper divisors (1).

318483881 is an equidigital number, since it uses as much as digits as its factorization.

318483881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 147456, while the sum is 44.

The square root of 318483881 is about 17846.1166924348. The cubic root of 318483881 is about 682.9084485927.

The spelling of 318483881 in words is "three hundred eighteen million, four hundred eighty-three thousand, eight hundred eighty-one".