671236903243431 has 64 divisors (see below), whose sum is σ = 1186127740108800. Its totient is φ = 366816233333088.

The previous prime is 671236903243337. The next prime is 671236903243483. The reversal of 671236903243431 is 134342309632176.

It is a happy number.

671236903243431 is a `hidden beast` number, since 6 + 7 + 1 + 2 + 369 + 0 + 3 + 243 + 4 + 31 = 666.

671236903243431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 671236903243431 - 2³⁵ = 671202543505063 is a prime.

It is a super-2 number, since 2×671236903243431² (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 (671236903243631) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7518640 + ... + 37403258.

It is an arithmetic number, because the mean of its divisors is an integer number (18533245939200).

Almost surely, 2^{671236903243431} is an apocalyptic number.

671236903243431 is a deficient number, since it is larger than the sum of its proper divisors (514890836865369).

671236903243431 is a wasteful number, since it uses less digits than its factorization.

671236903243431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29889825 (or 29889819 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 54.

The spelling of 671236903243431 in words is "six hundred seventy-one trillion, two hundred thirty-six billion, nine hundred three million, two hundred forty-three thousand, four hundred thirty-one".