6971131 has 2 divisors, whose sum is σ = 6971132. Its totient is φ = 6971130.

The previous prime is 6971123. The next prime is 6971137. The reversal of 6971131 is 1311796.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6971131 - 2³ = 6971123 is a prime.

It is a super-2 number, since 2×6971131² = 97193334838322, 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 6971131.

It is not a weakly prime, because it can be changed into another prime (6971137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3485565 + 3485566.

It is an arithmetic number, because the mean of its divisors is an integer number (3485566).

Almost surely, 2^6971131 is an apocalyptic number.

6971131 is a deficient number, since it is larger than the sum of its proper divisors (1).

6971131 is an equidigital number, since it uses as much as digits as its factorization.

6971131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134, while the sum is 28.

The square root of 6971131 is about 2640.2899461991. The cubic root of 6971131 is about 191.0297825509.

The spelling of 6971131 in words is "six million, nine hundred seventy-one thousand, one hundred thirty-one".