131851367033437 has 2 divisors, whose sum is σ = 131851367033438. Its totient is φ = 131851367033436.

The previous prime is 131851367033411. The next prime is 131851367033443. The reversal of 131851367033437 is 734330763158131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102838643801721 + 29012723231716 = 10140939^2 + 5386346^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131851367033437 is a prime.

It is a super-2 number, since 2×131851367033437² (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 (131851367030437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65925683516718 + 65925683516719.

It is an arithmetic number, because the mean of its divisors is an integer number (65925683516719).

Almost surely, 2^{131851367033437} is an apocalyptic number.

It is an amenable number.

131851367033437 is a deficient number, since it is larger than the sum of its proper divisors (1).

131851367033437 is an equidigital number, since it uses as much as digits as its factorization.

131851367033437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11430720, while the sum is 55.

The spelling of 131851367033437 in words is "one hundred thirty-one trillion, eight hundred fifty-one billion, three hundred sixty-seven million, thirty-three thousand, four hundred thirty-seven".