231423423231 has 64 divisors (see below), whose sum is σ = 438666955776. Its totient is φ = 104444467200.

The previous prime is 231423423223. The next prime is 231423423263. The reversal of 231423423231 is 132324324132.

It is a happy number.

It is not a de Polignac number, because 231423423231 - 2³ = 231423423223 is a prime.

It is a super-2 number, since 2×231423423231² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231423423221) 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, 2215540 + ... + 2317641.

It is an arithmetic number, because the mean of its divisors is an integer number (6854171184).

Almost surely, 2^231423423231 is an apocalyptic number.

231423423231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

231423423231 is a deficient number, since it is larger than the sum of its proper divisors (207243532545).

231423423231 is a wasteful number, since it uses less digits than its factorization.

231423423231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4533232.

The product of its digits is 20736, while the sum is 30.

Adding to 231423423231 its reverse (132324324132), we get a palindrome (363747747363).

Subtracting from 231423423231 its reverse (132324324132), we obtain a palindrome (99099099099).

The spelling of 231423423231 in words is "two hundred thirty-one billion, four hundred twenty-three million, four hundred twenty-three thousand, two hundred thirty-one".