8972175631 has 2 divisors, whose sum is σ = 8972175632. Its totient is φ = 8972175630.

The previous prime is 8972175617. The next prime is 8972175637. The reversal of 8972175631 is 1365712798.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8972175631 - 2⁵ = 8972175599 is a prime.

It is a super-2 number, since 2×8972175631² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8972175637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4486087815 + 4486087816.

It is an arithmetic number, because the mean of its divisors is an integer number (4486087816).

Almost surely, 2^8972175631 is an apocalyptic number.

8972175631 is a deficient number, since it is larger than the sum of its proper divisors (1).

8972175631 is an equidigital number, since it uses as much as digits as its factorization.

8972175631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 49.

The square root of 8972175631 is about 94721.5689851050. The cubic root of 8972175631 is about 2077.9380168805.

The spelling of 8972175631 in words is "eight billion, nine hundred seventy-two million, one hundred seventy-five thousand, six hundred thirty-one".