233453505231 has 6 divisors (see below), whose sum is σ = 337210618680. Its totient is φ = 155635670148.

The previous prime is 233453505221. The next prime is 233453505247. The reversal of 233453505231 is 132505354332.

233453505231 is a `hidden beast` number, since 2 + 3 + 34 + 53 + 50 + 523 + 1 = 666.

It is not a de Polignac number, because 233453505231 - 2¹⁵ = 233453472463 is a prime.

It is a super-2 number, since 2×233453505231² (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 (233453505211) 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 5 ways as a sum of consecutive naturals, for example, 12969639171 + ... + 12969639188.

It is an arithmetic number, because the mean of its divisors is an integer number (56201769780).

Almost surely, 2^233453505231 is an apocalyptic number.

233453505231 is a deficient number, since it is larger than the sum of its proper divisors (103757113449).

233453505231 is a wasteful number, since it uses less digits than its factorization.

233453505231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25939278365 (or 25939278362 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 36.

Adding to 233453505231 its reverse (132505354332), we get a palindrome (365958859563).

The spelling of 233453505231 in words is "two hundred thirty-three billion, four hundred fifty-three million, five hundred five thousand, two hundred thirty-one".