231132229 has 8 divisors (see below), whose sum is σ = 242431488. Its totient is φ = 220098960.

The previous prime is 231132217. The next prime is 231132257. The reversal of 231132229 is 922231132.

231132229 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 231132229 - 2⁵ = 231132197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231132259) 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, 64717 + ... + 68194.

It is an arithmetic number, because the mean of its divisors is an integer number (30303936).

Almost surely, 2^231132229 is an apocalyptic number.

It is an amenable number.

231132229 is a deficient number, since it is larger than the sum of its proper divisors (11299259).

231132229 is a wasteful number, since it uses less digits than its factorization.

231132229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132995.

The product of its digits is 1296, while the sum is 25.

The square root of 231132229 is about 15203.0335459736. The cubic root of 231132229 is about 613.6962966272.

It can be divided in two parts, 231132 and 229, that added together give a square (231361 = 481²).

The spelling of 231132229 in words is "two hundred thirty-one million, one hundred thirty-two thousand, two hundred twenty-nine".