6315131 has 2 divisors, whose sum is σ = 6315132. Its totient is φ = 6315130.

The previous prime is 6315121. The next prime is 6315139. The reversal of 6315131 is 1315136.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6315131 - 2¹⁰ = 6314107 is a prime.

It is a super-2 number, since 2×6315131² = 79761759094322, which contains 22 as substring.

It is equal to p₄₃₃₀₂₈ and since 6315131 and 433028 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (6315139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3157565 + 3157566.

It is an arithmetic number, because the mean of its divisors is an integer number (3157566).

Almost surely, 2^6315131 is an apocalyptic number.

6315131 is a deficient number, since it is larger than the sum of its proper divisors (1).

6315131 is an equidigital number, since it uses as much as digits as its factorization.

6315131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 270, while the sum is 20.

The square root of 6315131 is about 2512.9924393042. The cubic root of 6315131 is about 184.8392175003.

It can be divided in two parts, 6315 and 131, that added together give a palindrome (6446).

The spelling of 6315131 in words is "six million, three hundred fifteen thousand, one hundred thirty-one".