231505430 has 32 divisors (see below), whose sum is σ = 451138464. Its totient is φ = 85026816.

The previous prime is 231505429. The next prime is 231505457. The reversal of 231505430 is 34505132.

231505430 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 = 231505396 and 231505405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20477 + ... + 29703.

It is an arithmetic number, because the mean of its divisors is an integer number (14098077).

Almost surely, 2^231505430 is an apocalyptic number.

231505430 is a deficient number, since it is larger than the sum of its proper divisors (219633034).

231505430 is a wasteful number, since it uses less digits than its factorization.

231505430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9440.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 231505430 is about 15215.3024945283. The cubic root of 231505430 is about 614.0264235464.

The spelling of 231505430 in words is "two hundred thirty-one million, five hundred five thousand, four hundred thirty".