131131202120357 has 2 divisors, whose sum is σ = 131131202120358. Its totient is φ = 131131202120356.

The previous prime is 131131202120323. The next prime is 131131202120381. The reversal of 131131202120357 is 753021202131131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128264821064836 + 2866381055521 = 11325406^2 + 1693039^2 .

It is a cyclic number.

It is not a de Polignac number, because 131131202120357 - 2²⁴ = 131131185343141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131131202150357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65565601060178 + 65565601060179.

It is an arithmetic number, because the mean of its divisors is an integer number (65565601060179).

Almost surely, 2^{131131202120357} is an apocalyptic number.

It is an amenable number.

131131202120357 is a deficient number, since it is larger than the sum of its proper divisors (1).

131131202120357 is an equidigital number, since it uses as much as digits as its factorization.

131131202120357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 32.

Adding to 131131202120357 its reverse (753021202131131), we get a palindrome (884152404251488).

The spelling of 131131202120357 in words is "one hundred thirty-one trillion, one hundred thirty-one billion, two hundred two million, one hundred twenty thousand, three hundred fifty-seven".