202131202130981 has 2 divisors, whose sum is σ = 202131202130982. Its totient is φ = 202131202130980.

The previous prime is 202131202130933. The next prime is 202131202131011. The reversal of 202131202130981 is 189031202131202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195923455474756 + 6207746656225 = 13997266^2 + 2491535^2 .

It is a cyclic number.

It is not a de Polignac number, because 202131202130981 - 2⁶ = 202131202130917 is a prime.

It is a super-2 number, since 2×202131202130981² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202131202130281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101065601065490 + 101065601065491.

It is an arithmetic number, because the mean of its divisors is an integer number (101065601065491).

Almost surely, 2^{202131202130981} is an apocalyptic number.

It is an amenable number.

202131202130981 is a deficient number, since it is larger than the sum of its proper divisors (1).

202131202130981 is an equidigital number, since it uses as much as digits as its factorization.

202131202130981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 35.

The spelling of 202131202130981 in words is "two hundred two trillion, one hundred thirty-one billion, two hundred two million, one hundred thirty thousand, nine hundred eighty-one".