231623265 has 16 divisors (see below), whose sum is σ = 372153600. Its totient is φ = 123013632.

The previous prime is 231623251. The next prime is 231623269. The reversal of 231623265 is 562326132.

231623265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 231623265 - 2⁶ = 231623201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231623269) 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, 28720 + ... + 35889.

It is an arithmetic number, because the mean of its divisors is an integer number (23259600).

Almost surely, 2^231623265 is an apocalyptic number.

It is an amenable number.

231623265 is a deficient number, since it is larger than the sum of its proper divisors (140530335).

231623265 is a wasteful number, since it uses less digits than its factorization.

231623265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64856.

The product of its digits is 12960, while the sum is 30.

The square root of 231623265 is about 15219.1742548668. The cubic root of 231623265 is about 614.1305845751.

Adding to 231623265 its reverse (562326132), we get a palindrome (793949397).

The spelling of 231623265 in words is "two hundred thirty-one million, six hundred twenty-three thousand, two hundred sixty-five".