23231403 has 48 divisors (see below), whose sum is σ = 38525760. Its totient is φ = 13381632.

The previous prime is 23231399. The next prime is 23231473. The reversal of 23231403 is 30413232.

23231403 is a `hidden beast` number, since 232 + 31 + 403 = 666.

It is not a de Polignac number, because 23231403 - 2² = 23231399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23231473) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 239451 + ... + 239547.

It is an arithmetic number, because the mean of its divisors is an integer number (802620).

Almost surely, 2^23231403 is an apocalyptic number.

23231403 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

23231403 is a deficient number, since it is larger than the sum of its proper divisors (15294357).

23231403 is a wasteful number, since it uses less digits than its factorization.

23231403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 23231403 is about 4819.8965756539. The cubic root of 23231403 is about 285.3372554136.

Adding to 23231403 its reverse (30413232), we get a palindrome (53644635).

The spelling of 23231403 in words is "twenty-three million, two hundred thirty-one thousand, four hundred three".