233131131 has 6 divisors (see below), whose sum is σ = 336744980. Its totient is φ = 155420748.

The previous prime is 233131111. The next prime is 233131141. The reversal of 233131131 is 131131332.

It is a happy number.

It is not a de Polignac number, because 233131131 - 2⁵ = 233131099 is a prime.

It is a super-2 number, since 2×233131131² = 108700248482678322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (233131111) 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 5 ways as a sum of consecutive naturals, for example, 12951721 + ... + 12951738.

Almost surely, 2^233131131 is an apocalyptic number.

233131131 is a deficient number, since it is larger than the sum of its proper divisors (103613849).

233131131 is a wasteful number, since it uses less digits than its factorization.

233131131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25903465 (or 25903462 counting only the distinct ones).

The product of its digits is 162, while the sum is 18.

The square root of 233131131 is about 15268.6322570163. The cubic root of 233131131 is about 615.4603651973.

Adding to 233131131 its reverse (131131332), we get a palindrome (364262463).

The spelling of 233131131 in words is "two hundred thirty-three million, one hundred thirty-one thousand, one hundred thirty-one".