231644430 has 24 divisors (see below), whose sum is σ = 602275752. Its totient is φ = 61771824.

The previous prime is 231644429. The next prime is 231644449. The reversal of 231644430 is 34446132.

231644430 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 231644394 and 231644403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1286824 + ... + 1287003.

It is an arithmetic number, because the mean of its divisors is an integer number (25094823).

Almost surely, 2^231644430 is an apocalyptic number.

231644430 is an abundant number, since it is smaller than the sum of its proper divisors (370631322).

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

231644430 is a wasteful number, since it uses less digits than its factorization.

231644430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2573840 (or 2573837 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 231644430 is about 15219.8695789419. The cubic root of 231644430 is about 614.1492897743.

The spelling of 231644430 in words is "two hundred thirty-one million, six hundred forty-four thousand, four hundred thirty".