671350831 has 2 divisors, whose sum is σ = 671350832. Its totient is φ = 671350830.

The previous prime is 671350817. The next prime is 671350837. The reversal of 671350831 is 138053176.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 671350831 - 2²⁵ = 637796399 is a prime.

It is a super-2 number, since 2×671350831² = 901423876568781122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671350837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335675415 + 335675416.

It is an arithmetic number, because the mean of its divisors is an integer number (335675416).

Almost surely, 2^671350831 is an apocalyptic number.

671350831 is a deficient number, since it is larger than the sum of its proper divisors (1).

671350831 is an equidigital number, since it uses as much as digits as its factorization.

671350831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 671350831 is about 25910.4386493166. The cubic root of 671350831 is about 875.6216886881.

The spelling of 671350831 in words is "six hundred seventy-one million, three hundred fifty thousand, eight hundred thirty-one".