231132329 has 4 divisors (see below), whose sum is σ = 231329220. Its totient is φ = 230935440.

The previous prime is 231132299. The next prime is 231132337. The reversal of 231132329 is 923231132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 165894400 + 65237929 = 12880^2 + 8077^2 .

It is a cyclic number.

It is not a de Polignac number, because 231132329 - 2¹⁶ = 231066793 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 231132298 and 231132307.

It is not an unprimeable number, because it can be changed into a prime (231132389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96674 + ... + 99035.

It is an arithmetic number, because the mean of its divisors is an integer number (57832305).

Almost surely, 2^231132329 is an apocalyptic number.

It is an amenable number.

231132329 is a deficient number, since it is larger than the sum of its proper divisors (196891).

231132329 is a wasteful number, since it uses less digits than its factorization.

231132329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196890.

The product of its digits is 1944, while the sum is 26.

The square root of 231132329 is about 15203.0368347906. The cubic root of 231132329 is about 613.6963851330.

The spelling of 231132329 in words is "two hundred thirty-one million, one hundred thirty-two thousand, three hundred twenty-nine".