231530223404 has 24 divisors (see below), whose sum is σ = 418515406848. Its totient is φ = 111959165520.

The previous prime is 231530223391. The next prime is 231530223439. The reversal of 231530223404 is 404322035132.

It is a happy number.

It is a super-2 number, since 2×231530223404² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401474 + ... + 790089.

It is an arithmetic number, because the mean of its divisors is an integer number (17438141952).

Almost surely, 2^231530223404 is an apocalyptic number.

It is an amenable number.

231530223404 is a deficient number, since it is larger than the sum of its proper divisors (186985183444).

231530223404 is a wasteful number, since it uses less digits than its factorization.

231530223404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193165 (or 1193163 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 231530223404 its reverse (404322035132), we get a palindrome (635852258536).

The spelling of 231530223404 in words is "two hundred thirty-one billion, five hundred thirty million, two hundred twenty-three thousand, four hundred four".