975642131 has 2 divisors, whose sum is σ = 975642132. Its totient is φ = 975642130.

The previous prime is 975642127. The next prime is 975642133. The reversal of 975642131 is 131246579.

975642131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 975642131 - 2² = 975642127 is a prime.

It is a super-2 number, since 2×975642131² = 1903755135564442322, which contains 22 as substring.

Together with 975642133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (975642133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487821065 + 487821066.

It is an arithmetic number, because the mean of its divisors is an integer number (487821066).

Almost surely, 2^975642131 is an apocalyptic number.

975642131 is a deficient number, since it is larger than the sum of its proper divisors (1).

975642131 is an equidigital number, since it uses as much as digits as its factorization.

975642131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 38.

The square root of 975642131 is about 31235.2706247281. The cubic root of 975642131 is about 991.8138806407.

The spelling of 975642131 in words is "nine hundred seventy-five million, six hundred forty-two thousand, one hundred thirty-one".