231071432999 has 8 divisors (see below), whose sum is σ = 252315524880. Its totient is φ = 209866940800.

The previous prime is 231071432981. The next prime is 231071433007. The reversal of 231071432999 is 999234170132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 231071432999 - 2²⁰ = 231070384423 is a prime.

It is a super-2 number, since 2×231071432999² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231071432909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9887714 + ... + 9911055.

It is an arithmetic number, because the mean of its divisors is an integer number (31539440610).

Almost surely, 2^231071432999 is an apocalyptic number.

231071432999 is a deficient number, since it is larger than the sum of its proper divisors (21244091881).

231071432999 is a wasteful number, since it uses less digits than its factorization.

231071432999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19799841.

The product of its (nonzero) digits is 734832, while the sum is 50.

The spelling of 231071432999 in words is "two hundred thirty-one billion, seventy-one million, four hundred thirty-two thousand, nine hundred ninety-nine".