971630131 has 2 divisors, whose sum is σ = 971630132. Its totient is φ = 971630130.

The previous prime is 971630119. The next prime is 971630141. The reversal of 971630131 is 131036179.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 971630131 - 2²¹ = 969532979 is a prime.

It is a super-2 number, since 2×971630131² = 1888130222934154322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 971630093 and 971630102.

It is not a weakly prime, because it can be changed into another prime (971630141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485815065 + 485815066.

It is an arithmetic number, because the mean of its divisors is an integer number (485815066).

Almost surely, 2^971630131 is an apocalyptic number.

971630131 is a deficient number, since it is larger than the sum of its proper divisors (1).

971630131 is an equidigital number, since it uses as much as digits as its factorization.

971630131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 971630131 is about 31170.9821949838. The cubic root of 971630131 is about 990.4525125829.

The spelling of 971630131 in words is "nine hundred seventy-one million, six hundred thirty thousand, one hundred thirty-one".