319031 has 2 divisors, whose sum is σ = 319032. Its totient is φ = 319030.

The previous prime is 319027. The next prime is 319037. The reversal of 319031 is 130913.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 319031 - 2² = 319027 is a prime.

It is a super-2 number, since 2×319031² = 203561557922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 319031.

It is not a weakly prime, because it can be changed into another prime (319037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159515 + 159516.

It is an arithmetic number, because the mean of its divisors is an integer number (159516).

2³¹⁹⁰³¹ is an apocalyptic number.

319031 is a deficient number, since it is larger than the sum of its proper divisors (1).

319031 is an equidigital number, since it uses as much as digits as its factorization.

319031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81, while the sum is 17.

The square root of 319031 is about 564.8282924925. The cubic root of 319031 is about 68.3299277832.

Adding to 319031 its reverse (130913), we get a palindrome (449944).

The spelling of 319031 in words is "three hundred nineteen thousand, thirty-one".