6390131 has 8 divisors (see below), whose sum is σ = 7030128. Its totient is φ = 5808000.

The previous prime is 6390127. The next prime is 6390161. The reversal of 6390131 is 1310936.

It is not a de Polignac number, because 6390131 - 2² = 6390127 is a prime.

It is a super-2 number, since 2×6390131² = 81667548394322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6390097 and 6390106.

It is not an unprimeable number, because it can be changed into a prime (6390161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1070 + ... + 3731.

It is an arithmetic number, because the mean of its divisors is an integer number (878766).

Almost surely, 2^6390131 is an apocalyptic number.

6390131 is a deficient number, since it is larger than the sum of its proper divisors (639997).

6390131 is an equidigital number, since it uses as much as digits as its factorization.

6390131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4834 (or 4812 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 6390131 is about 2527.8708432196. The cubic root of 6390131 is about 185.5680712485.

The spelling of 6390131 in words is "six million, three hundred ninety thousand, one hundred thirty-one".