231323029 has 32 divisors (see below), whose sum is σ = 294174720. Its totient is φ = 177230592.

The previous prime is 231323021. The next prime is 231323069. The reversal of 231323029 is 920323132.

It is not a de Polignac number, because 231323029 - 2³ = 231323021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231322994 and 231323012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231323021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 610162 + ... + 610540.

It is an arithmetic number, because the mean of its divisors is an integer number (9192960).

Almost surely, 2^231323029 is an apocalyptic number.

It is an amenable number.

231323029 is a deficient number, since it is larger than the sum of its proper divisors (62851691).

231323029 is a wasteful number, since it uses less digits than its factorization.

231323029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 231323029 is about 15209.3073149306. The cubic root of 231323029 is about 613.8651192509.

The spelling of 231323029 in words is "two hundred thirty-one million, three hundred twenty-three thousand, twenty-nine".