671890231056231 has 144 divisors (see below), whose sum is σ = 1108991329205760. Its totient is φ = 406203715209600.

The previous prime is 671890231056223. The next prime is 671890231056259. The reversal of 671890231056231 is 132650132098176.

It is a happy number.

671890231056231 is a `hidden beast` number, since 6 + 7 + 1 + 8 + 9 + 0 + 2 + 3 + 1 + 0 + 5 + 623 + 1 = 666.

It is not a de Polignac number, because 671890231056231 - 2³ = 671890231056223 is a prime.

It is a super-2 number, since 2×671890231056231² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671890231006231) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 67128602355 + ... + 67128612363.

It is an arithmetic number, because the mean of its divisors is an integer number (7701328675040).

Almost surely, 2^{671890231056231} is an apocalyptic number.

671890231056231 is a deficient number, since it is larger than the sum of its proper divisors (437101098149529).

671890231056231 is a wasteful number, since it uses less digits than its factorization.

671890231056231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15440 (or 15417 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 671890231056231 in words is "six hundred seventy-one trillion, eight hundred ninety billion, two hundred thirty-one million, fifty-six thousand, two hundred thirty-one".