233040434531 has 4 divisors (see below), whose sum is σ = 233057385600. Its totient is φ = 233023483464.

The previous prime is 233040434491. The next prime is 233040434581. The reversal of 233040434531 is 135434040332.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-233040434531 is a prime.

It is a super-2 number, since 2×233040434531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (233040434581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8454896 + ... + 8482413.

It is an arithmetic number, because the mean of its divisors is an integer number (58264346400).

Almost surely, 2^233040434531 is an apocalyptic number.

233040434531 is a deficient number, since it is larger than the sum of its proper divisors (16951069).

233040434531 is a wasteful number, since it uses less digits than its factorization.

233040434531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16951068.

The product of its (nonzero) digits is 51840, while the sum is 32.

Adding to 233040434531 its reverse (135434040332), we get a palindrome (368474474863).

The spelling of 233040434531 in words is "two hundred thirty-three billion, forty million, four hundred thirty-four thousand, five hundred thirty-one".