315045431 has 2 divisors, whose sum is σ = 315045432. Its totient is φ = 315045430.

The previous prime is 315045407. The next prime is 315045439. The reversal of 315045431 is 134540513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 315045431 - 2¹⁴ = 315029047 is a prime.

It is a super-2 number, since 2×315045431² = 198507247187951522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 315045431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315045439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157522715 + 157522716.

It is an arithmetic number, because the mean of its divisors is an integer number (157522716).

Almost surely, 2^315045431 is an apocalyptic number.

315045431 is a deficient number, since it is larger than the sum of its proper divisors (1).

315045431 is an equidigital number, since it uses as much as digits as its factorization.

315045431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 315045431 is about 17749.5191765862. The cubic root of 315045431 is about 680.4419207857.

Adding to 315045431 its reverse (134540513), we get a palindrome (449585944).

The spelling of 315045431 in words is "three hundred fifteen million, forty-five thousand, four hundred thirty-one".