231033231 has 48 divisors (see below), whose sum is σ = 396658080. Its totient is φ = 127733760.

The previous prime is 231033197. The next prime is 231033233. The reversal of 231033231 is 132330132.

It is not a de Polignac number, because 231033231 - 2⁶ = 231033167 is a prime.

It is a super-2 number, since 2×231033231² = 106752707652598722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231033233) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 113535 + ... + 115551.

It is an arithmetic number, because the mean of its divisors is an integer number (8263710).

Almost surely, 2^231033231 is an apocalyptic number.

231033231 is a deficient number, since it is larger than the sum of its proper divisors (165624849).

231033231 is a wasteful number, since it uses less digits than its factorization.

231033231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2136 (or 2133 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 231033231 is about 15199.7773338954. Note that the first 3 decimals coincide. The cubic root of 231033231 is about 613.6086651411.

Adding to 231033231 its reverse (132330132), we get a palindrome (363363363).

The spelling of 231033231 in words is "two hundred thirty-one million, thirty-three thousand, two hundred thirty-one".