233431233431 has 16 divisors (see below), whose sum is σ = 257211658656. Its totient is φ = 210078000000.

The previous prime is 233431233407. The next prime is 233431233481. The reversal of 233431233431 is 134332134332.

It is not a de Polignac number, because 233431233431 - 2²² = 233427039127 is a prime.

It is a super-2 number, since 2×233431233431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233431233401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10989401 + ... + 11010621.

It is an arithmetic number, because the mean of its divisors is an integer number (16075728666).

Almost surely, 2^233431233431 is an apocalyptic number.

233431233431 is a deficient number, since it is larger than the sum of its proper divisors (23780425225).

233431233431 is a wasteful number, since it uses less digits than its factorization.

233431233431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31234.

The product of its digits is 46656, while the sum is 32.

Adding to 233431233431 its reverse (134332134332), we get a palindrome (367763367763).

Subtracting from 233431233431 its reverse (134332134332), we obtain a palindrome (99099099099).

The spelling of 233431233431 in words is "two hundred thirty-three billion, four hundred thirty-one million, two hundred thirty-three thousand, four hundred thirty-one".