6913531 has 2 divisors, whose sum is σ = 6913532. Its totient is φ = 6913530.

The previous prime is 6913523. The next prime is 6913541. The reversal of 6913531 is 1353196.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6913531 - 2³ = 6913523 is a prime.

It is a super-2 number, since 2×6913531² = 95593821775922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 6913531.

It is not a weakly prime, because it can be changed into another prime (6913541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3456765 + 3456766.

It is an arithmetic number, because the mean of its divisors is an integer number (3456766).

Almost surely, 2^6913531 is an apocalyptic number.

6913531 is a deficient number, since it is larger than the sum of its proper divisors (1).

6913531 is an equidigital number, since it uses as much as digits as its factorization.

6913531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2430, while the sum is 28.

The square root of 6913531 is about 2629.3594276934. The cubic root of 6913531 is about 190.5021894977.

The spelling of 6913531 in words is "six million, nine hundred thirteen thousand, five hundred thirty-one".