131331123099 has 12 divisors (see below), whose sum is σ = 206946012312. Its totient is φ = 79594620000.

The previous prime is 131331123097. The next prime is 131331123103. The reversal of 131331123099 is 990321133131.

131331123099 is a `hidden beast` number, since 1 + 3 + 1 + 331 + 1 + 230 + 99 = 666.

It is not a de Polignac number, because 131331123099 - 2¹ = 131331123097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131331123097) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 663288402 + ... + 663288599.

It is an arithmetic number, because the mean of its divisors is an integer number (17245501026).

Almost surely, 2^131331123099 is an apocalyptic number.

131331123099 is a deficient number, since it is larger than the sum of its proper divisors (75614889213).

131331123099 is a wasteful number, since it uses less digits than its factorization.

131331123099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326577018 (or 1326577015 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 36.

The spelling of 131331123099 in words is "one hundred thirty-one billion, three hundred thirty-one million, one hundred twenty-three thousand, ninety-nine".