7961131 has 2 divisors, whose sum is σ = 7961132. Its totient is φ = 7961130.

The previous prime is 7961119. The next prime is 7961137. The reversal of 7961131 is 1311697.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7961131 - 2⁷ = 7961003 is a prime.

It is a super-2 number, since 2×7961131² = 126759213598322, 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 7961131.

It is not a weakly prime, because it can be changed into another prime (7961137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3980565 + 3980566.

It is an arithmetic number, because the mean of its divisors is an integer number (3980566).

Almost surely, 2^7961131 is an apocalyptic number.

7961131 is a deficient number, since it is larger than the sum of its proper divisors (1).

7961131 is an equidigital number, since it uses as much as digits as its factorization.

7961131 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 7961131 is about 2821.5476249746. The cubic root of 7961131 is about 199.6755656630.

The spelling of 7961131 in words is "seven million, nine hundred sixty-one thousand, one hundred thirty-one".