31020130319 has 2 divisors, whose sum is σ = 31020130320. Its totient is φ = 31020130318.

The previous prime is 31020130313. The next prime is 31020130321. The reversal of 31020130319 is 91303102013.

It is a strong prime.

It is an emirp because it is prime and its reverse (91303102013) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31020130319 - 2²⁸ = 30751694863 is a prime.

It is a super-2 number, since 2×31020130319² (a number of 22 digits) contains 22 as substring.

Together with 31020130321, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 31020130294 and 31020130303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31020130313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15510065159 + 15510065160.

It is an arithmetic number, because the mean of its divisors is an integer number (15510065160).

Almost surely, 2^31020130319 is an apocalyptic number.

31020130319 is a deficient number, since it is larger than the sum of its proper divisors (1).

31020130319 is an equidigital number, since it uses as much as digits as its factorization.

31020130319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 23.

The spelling of 31020130319 in words is "thirty-one billion, twenty million, one hundred thirty thousand, three hundred nineteen".