233231131 has 12 divisors (see below), whose sum is σ = 275030472. Its totient is φ = 197170848.

The previous prime is 233231113. The next prime is 233231179. The reversal of 233231131 is 131132332.

It is not a de Polignac number, because 233231131 - 2⁹ = 233230619 is a prime.

It is a super-2 number, since 2×233231131² = 108793520935078322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 233231099 and 233231108.

It is not an unprimeable number, because it can be changed into a prime (233237131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29025 + ... + 36178.

It is an arithmetic number, because the mean of its divisors is an integer number (22919206).

Almost surely, 2^233231131 is an apocalyptic number.

233231131 is a deficient number, since it is larger than the sum of its proper divisors (41799341).

233231131 is an equidigital number, since it uses as much as digits as its factorization.

233231131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65290 (or 65283 counting only the distinct ones).

The product of its digits is 324, while the sum is 19.

The square root of 233231131 is about 15271.9065934807. The cubic root of 233231131 is about 615.5483517859.

Adding to 233231131 its reverse (131132332), we get a palindrome (364363463).

The spelling of 233231131 in words is "two hundred thirty-three million, two hundred thirty-one thousand, one hundred thirty-one".