318380831 has 2 divisors, whose sum is σ = 318380832. Its totient is φ = 318380830.

The previous prime is 318380801. The next prime is 318380833. The reversal of 318380831 is 138083813.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 318380831 - 2¹⁰ = 318379807 is a prime.

It is a super-2 number, since 2×318380831² = 202732707096501122, which contains 22 as substring.

Together with 318380833, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 318380791 and 318380800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318380833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159190415 + 159190416.

It is an arithmetic number, because the mean of its divisors is an integer number (159190416).

Almost surely, 2^318380831 is an apocalyptic number.

318380831 is a deficient number, since it is larger than the sum of its proper divisors (1).

318380831 is an equidigital number, since it uses as much as digits as its factorization.

318380831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 318380831 is about 17843.2292761148. The cubic root of 318380831 is about 682.8347857259.

The spelling of 318380831 in words is "three hundred eighteen million, three hundred eighty thousand, eight hundred thirty-one".