131011125499 has 2 divisors, whose sum is σ = 131011125500. Its totient is φ = 131011125498.

The previous prime is 131011125461. The next prime is 131011125503. The reversal of 131011125499 is 994521110131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131011125499 - 2¹⁷ = 131010994427 is a prime.

It is not a weakly prime, because it can be changed into another prime (131011125409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65505562749 + 65505562750.

It is an arithmetic number, because the mean of its divisors is an integer number (65505562750).

Almost surely, 2^131011125499 is an apocalyptic number.

131011125499 is a deficient number, since it is larger than the sum of its proper divisors (1).

131011125499 is an equidigital number, since it uses as much as digits as its factorization.

131011125499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 37.

The spelling of 131011125499 in words is "one hundred thirty-one billion, eleven million, one hundred twenty-five thousand, four hundred ninety-nine".