131512232099 has 2 divisors, whose sum is σ = 131512232100. Its totient is φ = 131512232098.

The previous prime is 131512232083. The next prime is 131512232107. The reversal of 131512232099 is 990232215131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131512232099 - 2⁴ = 131512232083 is a prime.

It is a super-2 number, since 2×131512232099² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (131512232029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65756116049 + 65756116050.

It is an arithmetic number, because the mean of its divisors is an integer number (65756116050).

Almost surely, 2^131512232099 is an apocalyptic number.

131512232099 is a deficient number, since it is larger than the sum of its proper divisors (1).

131512232099 is an equidigital number, since it uses as much as digits as its factorization.

131512232099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 38.

The spelling of 131512232099 in words is "one hundred thirty-one billion, five hundred twelve million, two hundred thirty-two thousand, ninety-nine".