231332031099 has 12 divisors (see below), whose sum is σ = 359849826336. Its totient is φ = 142358172912.

The previous prime is 231332031089. The next prime is 231332031113. The reversal of 231332031099 is 990130233132.

It is a happy number.

231332031099 is a `hidden beast` number, since 2 + 3 + 1 + 332 + 0 + 310 + 9 + 9 = 666.

It is not a de Polignac number, because 231332031099 - 2⁵ = 231332031067 is a prime.

It is a super-2 number, since 2×231332031099² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231332031079) 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, 988598307 + ... + 988598540.

It is an arithmetic number, because the mean of its divisors is an integer number (29987485528).

Almost surely, 2^231332031099 is an apocalyptic number.

231332031099 is a deficient number, since it is larger than the sum of its proper divisors (128517795237).

231332031099 is a wasteful number, since it uses less digits than its factorization.

231332031099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1977196866 (or 1977196863 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 36.

The spelling of 231332031099 in words is "two hundred thirty-one billion, three hundred thirty-two million, thirty-one thousand, ninety-nine".