6465131 has 2 divisors, whose sum is σ = 6465132. Its totient is φ = 6465130.

The previous prime is 6465127. The next prime is 6465133. The reversal of 6465131 is 1315646.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6465131 - 2² = 6465127 is a prime.

It is a super-2 number, since 2×6465131² = 83595837694322, which contains 22 as substring.

Together with 6465133, it forms a pair of twin primes.

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 6465131.

It is not a weakly prime, because it can be changed into another prime (6465133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3232565 + 3232566.

It is an arithmetic number, because the mean of its divisors is an integer number (3232566).

Almost surely, 2^6465131 is an apocalyptic number.

6465131 is a deficient number, since it is larger than the sum of its proper divisors (1).

6465131 is an equidigital number, since it uses as much as digits as its factorization.

6465131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

The square root of 6465131 is about 2542.6621875507. The cubic root of 6465131 is about 186.2912441129.

The spelling of 6465131 in words is "six million, four hundred sixty-five thousand, one hundred thirty-one".