671312923 has 2 divisors, whose sum is σ = 671312924. Its totient is φ = 671312922.

The previous prime is 671312827. The next prime is 671312927. The reversal of 671312923 is 329213176.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671312923 is a prime.

It is a super-2 number, since 2×671312923² = 901322081173607858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (671312927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335656461 + 335656462.

It is an arithmetic number, because the mean of its divisors is an integer number (335656462).

Almost surely, 2^671312923 is an apocalyptic number.

671312923 is a deficient number, since it is larger than the sum of its proper divisors (1).

671312923 is an equidigital number, since it uses as much as digits as its factorization.

671312923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 34.

The square root of 671312923 is about 25909.7071191474. The cubic root of 671312923 is about 875.6052076422.

The spelling of 671312923 in words is "six hundred seventy-one million, three hundred twelve thousand, nine hundred twenty-three".