31020303013013 has 2 divisors, whose sum is σ = 31020303013014. Its totient is φ = 31020303013012.

The previous prime is 31020303013001. The next prime is 31020303013027. The reversal of 31020303013013 is 31031030302013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28655283481969 + 2365019531044 = 5353063^2 + 1537862^2 .

It is a cyclic number.

It is not a de Polignac number, because 31020303013013 - 2⁴ = 31020303012997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31020303013043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15510151506506 + 15510151506507.

It is an arithmetic number, because the mean of its divisors is an integer number (15510151506507).

Almost surely, 2^{31020303013013} is an apocalyptic number.

It is an amenable number.

31020303013013 is a deficient number, since it is larger than the sum of its proper divisors (1).

31020303013013 is an equidigital number, since it uses as much as digits as its factorization.

31020303013013 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 20.

Adding to 31020303013013 its reverse (31031030302013), we get a palindrome (62051333315026).

The spelling of 31020303013013 in words is "thirty-one trillion, twenty billion, three hundred three million, thirteen thousand, thirteen".