931981423 has 2 divisors, whose sum is σ = 931981424. Its totient is φ = 931981422.

The previous prime is 931981411. The next prime is 931981451. The reversal of 931981423 is 324189139.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 931981423 - 2⁹ = 931980911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (931981403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 465990711 + 465990712.

It is an arithmetic number, because the mean of its divisors is an integer number (465990712).

Almost surely, 2^931981423 is an apocalyptic number.

931981423 is a deficient number, since it is larger than the sum of its proper divisors (1).

931981423 is an equidigital number, since it uses as much as digits as its factorization.

931981423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 40.

The square root of 931981423 is about 30528.3707884977. The cubic root of 931981423 is about 976.7927299190.

The spelling of 931981423 in words is "nine hundred thirty-one million, nine hundred eighty-one thousand, four hundred twenty-three".