91273029131 has 2 divisors, whose sum is σ = 91273029132. Its totient is φ = 91273029130.

The previous prime is 91273029119. The next prime is 91273029149. The reversal of 91273029131 is 13192037219.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91273029131 is a prime.

It is a super-2 number, since 2×91273029131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (91273029101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45636514565 + 45636514566.

It is an arithmetic number, because the mean of its divisors is an integer number (45636514566).

Almost surely, 2^91273029131 is an apocalyptic number.

91273029131 is a deficient number, since it is larger than the sum of its proper divisors (1).

91273029131 is an equidigital number, since it uses as much as digits as its factorization.

91273029131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 38.

The spelling of 91273029131 in words is "ninety-one billion, two hundred seventy-three million, twenty-nine thousand, one hundred thirty-one".