2031031238213 has 2 divisors, whose sum is σ = 2031031238214. Its totient is φ = 2031031238212.

The previous prime is 2031031238191. The next prime is 2031031238251. The reversal of 2031031238213 is 3128321301302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1434549966529 + 596481271684 = 1197727^2 + 772322^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2031031238213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2031031238263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1015515619106 + 1015515619107.

It is an arithmetic number, because the mean of its divisors is an integer number (1015515619107).

Almost surely, 2^{2031031238213} is an apocalyptic number.

It is an amenable number.

2031031238213 is a deficient number, since it is larger than the sum of its proper divisors (1).

2031031238213 is an equidigital number, since it uses as much as digits as its factorization.

2031031238213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 2031031238213 its reverse (3128321301302), we get a palindrome (5159352539515).

The spelling of 2031031238213 in words is "two trillion, thirty-one billion, thirty-one million, two hundred thirty-eight thousand, two hundred thirteen".