3131010023021 has 2 divisors, whose sum is σ = 3131010023022. Its totient is φ = 3131010023020.

The previous prime is 3131010023003. The next prime is 3131010023039. The reversal of 3131010023021 is 1203200101313.

It is a balanced prime because it is at equal distance from previous prime (3131010023003) and next prime (3131010023039).

It can be written as a sum of positive squares in only one way, i.e., 3087966222121 + 43043800900 = 1757261^2 + 207470^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3131010023021 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3131010023821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565505011510 + 1565505011511.

It is an arithmetic number, because the mean of its divisors is an integer number (1565505011511).

Almost surely, 2^{3131010023021} is an apocalyptic number.

It is an amenable number.

3131010023021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3131010023021 is an equidigital number, since it uses as much as digits as its factorization.

3131010023021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 3131010023021 its reverse (1203200101313), we get a palindrome (4334210124334).

The spelling of 3131010023021 in words is "three trillion, one hundred thirty-one billion, ten million, twenty-three thousand, twenty-one".