2031021311213 has 2 divisors, whose sum is σ = 2031021311214. Its totient is φ = 2031021311212.

The previous prime is 2031021311173. The next prime is 2031021311237. The reversal of 2031021311213 is 3121131201302.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1913292035524 + 117729275689 = 1383218^2 + 343117^2 .

It is a cyclic number.

It is not a de Polignac number, because 2031021311213 - 2³⁶ = 1962301834477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2031021341213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1015510655606 + 1015510655607.

It is an arithmetic number, because the mean of its divisors is an integer number (1015510655607).

Almost surely, 2^{2031021311213} is an apocalyptic number.

It is an amenable number.

2031021311213 is a deficient number, since it is larger than the sum of its proper divisors (1).

2031021311213 is an equidigital number, since it uses as much as digits as its factorization.

2031021311213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 2031021311213 its reverse (3121131201302), we get a palindrome (5152152512515).

The spelling of 2031021311213 in words is "two trillion, thirty-one billion, twenty-one million, three hundred eleven thousand, two hundred thirteen".