231326403 has 64 divisors (see below), whose sum is σ = 398131200. Its totient is φ = 118423200.

The previous prime is 231326401. The next prime is 231326419. The reversal of 231326403 is 304623132.

231326403 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 231326403 - 2¹ = 231326401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231326401) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1211038 + ... + 1211228.

It is an arithmetic number, because the mean of its divisors is an integer number (6220800).

Almost surely, 2^231326403 is an apocalyptic number.

231326403 is a deficient number, since it is larger than the sum of its proper divisors (166804797).

231326403 is a wasteful number, since it uses less digits than its factorization.

231326403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 231326403 is about 15209.4182334500. The cubic root of 231326403 is about 613.8681037798.

Adding to 231326403 its reverse (304623132), we get a palindrome (535949535).

The spelling of 231326403 in words is "two hundred thirty-one million, three hundred twenty-six thousand, four hundred three".