318498431 has 2 divisors, whose sum is σ = 318498432. Its totient is φ = 318498430.

The previous prime is 318498409. The next prime is 318498449. The reversal of 318498431 is 134894813.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 318498431 - 2¹⁰ = 318497407 is a prime.

It is a super-2 number, since 2×318498431² = 202882501098923522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318498491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159249215 + 159249216.

It is an arithmetic number, because the mean of its divisors is an integer number (159249216).

Almost surely, 2^318498431 is an apocalyptic number.

318498431 is a deficient number, since it is larger than the sum of its proper divisors (1).

318498431 is an equidigital number, since it uses as much as digits as its factorization.

318498431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 41.

The square root of 318498431 is about 17846.5243394897. The cubic root of 318498431 is about 682.9188480375.

The spelling of 318498431 in words is "three hundred eighteen million, four hundred ninety-eight thousand, four hundred thirty-one".