231433230 has 32 divisors (see below), whose sum is σ = 634788864. Its totient is φ = 52898976.

The previous prime is 231433211. The next prime is 231433231. The reversal of 231433230 is 32334132.

231433230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231433230² = 107122679896465800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 231433197 and 231433206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231433231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 550822 + ... + 551241.

It is an arithmetic number, because the mean of its divisors is an integer number (19837152).

Almost surely, 2^231433230 is an apocalyptic number.

231433230 is an abundant number, since it is smaller than the sum of its proper divisors (403355634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231433230 is a wasteful number, since it uses less digits than its factorization.

231433230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102080.

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 231433230 is about 15212.9296981219. The cubic root of 231433230 is about 613.9625844141.

Adding to 231433230 its reverse (32334132), we get a palindrome (263767362).

The spelling of 231433230 in words is "two hundred thirty-one million, four hundred thirty-three thousand, two hundred thirty".