313021013 has 2 divisors, whose sum is σ = 313021014. Its totient is φ = 313021012.

The previous prime is 313020997. The next prime is 313021031. The reversal of 313021013 is 310120313.

Together with next prime (313021031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 169572484 + 143448529 = 13022^2 + 11977^2 .

It is a cyclic number.

It is not a de Polignac number, because 313021013 - 2⁴ = 313020997 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (313021063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156510506 + 156510507.

It is an arithmetic number, because the mean of its divisors is an integer number (156510507).

Almost surely, 2^313021013 is an apocalyptic number.

It is an amenable number.

313021013 is a deficient number, since it is larger than the sum of its proper divisors (1).

313021013 is an equidigital number, since it uses as much as digits as its factorization.

313021013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 313021013 is about 17692.3998654790. The cubic root of 313021013 is about 678.9813272498.

Adding to 313021013 its reverse (310120313), we get a palindrome (623141326).

The spelling of 313021013 in words is "three hundred thirteen million, twenty-one thousand, thirteen".