231689812929 has 8 divisors (see below), whose sum is σ = 309595725600. Its totient is φ = 154121887776.

The previous prime is 231689812919. The next prime is 231689812931. The reversal of 231689812929 is 929218986132.

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

It is not a de Polignac number, because 231689812929 - 2⁷ = 231689812801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231689812909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84495279 + ... + 84498020.

It is an arithmetic number, because the mean of its divisors is an integer number (38699465700).

Almost surely, 2^231689812929 is an apocalyptic number.

It is an amenable number.

231689812929 is a deficient number, since it is larger than the sum of its proper divisors (77905912671).

231689812929 is a wasteful number, since it uses less digits than its factorization.

231689812929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168993759.

The product of its digits is 6718464, while the sum is 60.

The spelling of 231689812929 in words is "two hundred thirty-one billion, six hundred eighty-nine million, eight hundred twelve thousand, nine hundred twenty-nine".