231123403 has 8 divisors (see below), whose sum is σ = 264746240. Its totient is φ = 197651880.

The previous prime is 231123397. The next prime is 231123413. The reversal of 231123403 is 304321132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231123403 - 2⁵ = 231123371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231123413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34533 + ... + 40678.

It is an arithmetic number, because the mean of its divisors is an integer number (33093280).

Almost surely, 2^231123403 is an apocalyptic number.

231123403 is a deficient number, since it is larger than the sum of its proper divisors (33622837).

231123403 is an equidigital number, since it uses as much as digits as its factorization.

231123403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75657.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 231123403 is about 15202.7432721861. The cubic root of 231123403 is about 613.6884850057.

Adding to 231123403 its reverse (304321132), we get a palindrome (535444535).

The spelling of 231123403 in words is "two hundred thirty-one million, one hundred twenty-three thousand, four hundred three".