881973931 has 2 divisors, whose sum is σ = 881973932. Its totient is φ = 881973930.

The previous prime is 881973913. The next prime is 881973947. The reversal of 881973931 is 139379188.

Together with previous prime (881973913) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 881973931 - 2²⁵ = 848419499 is a prime.

It is a super-2 number, since 2×881973931² = 1555756029927185522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (881971931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440986965 + 440986966.

It is an arithmetic number, because the mean of its divisors is an integer number (440986966).

Almost surely, 2^881973931 is an apocalyptic number.

881973931 is a deficient number, since it is larger than the sum of its proper divisors (1).

881973931 is an equidigital number, since it uses as much as digits as its factorization.

881973931 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 49.

The square root of 881973931 is about 29698.0459121471. The cubic root of 881973931 is about 958.9999463582. Note that the first 4 decimals are identical.

The spelling of 881973931 in words is "eight hundred eighty-one million, nine hundred seventy-three thousand, nine hundred thirty-one".