319433969 has 2 divisors, whose sum is σ = 319433970. Its totient is φ = 319433968.

The previous prime is 319433953. The next prime is 319434019. The reversal of 319433969 is 969334913.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 263737600 + 55696369 = 16240^2 + 7463^2 .

It is a cyclic number.

It is not a de Polignac number, because 319433969 - 2⁴ = 319433953 is a prime.

It is a super-2 number, since 2×319433969² = 204076121102185922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (319433929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159716984 + 159716985.

It is an arithmetic number, because the mean of its divisors is an integer number (159716985).

Almost surely, 2^319433969 is an apocalyptic number.

It is an amenable number.

319433969 is a deficient number, since it is larger than the sum of its proper divisors (1).

319433969 is an equidigital number, since it uses as much as digits as its factorization.

319433969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 472392, while the sum is 47.

The square root of 319433969 is about 17872.7157701341. The cubic root of 319433969 is about 683.5868492352.

The spelling of 319433969 in words is "three hundred nineteen million, four hundred thirty-three thousand, nine hundred sixty-nine".