319981423 has 2 divisors, whose sum is σ = 319981424. Its totient is φ = 319981422.

The previous prime is 319981421. The next prime is 319981427. The reversal of 319981423 is 324189913.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 319981423 - 2¹ = 319981421 is a prime.

It is a super-2 number, since 2×319981423² = 204776222130209858, which contains 22 as substring.

Together with 319981421, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (319981421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159990711 + 159990712.

It is an arithmetic number, because the mean of its divisors is an integer number (159990712).

Almost surely, 2^319981423 is an apocalyptic number.

319981423 is a deficient number, since it is larger than the sum of its proper divisors (1).

319981423 is an equidigital number, since it uses as much as digits as its factorization.

319981423 is an odious number, because the sum of its binary digits is odd.

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

The square root of 319981423 is about 17888.0245695270. The cubic root of 319981423 is about 683.9771424882.

The spelling of 319981423 in words is "three hundred nineteen million, nine hundred eighty-one thousand, four hundred twenty-three".