233031405133 has 4 divisors (see below), whose sum is σ = 233041765788. Its totient is φ = 233021044480.

The previous prime is 233031405119. The next prime is 233031405197. The reversal of 233031405133 is 331504130332.

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

It can be written as a sum of positive squares in 2 ways, for example, as 100300156804 + 132731248329 = 316702^2 + 364323^2 .

It is a cyclic number.

It is not a de Polignac number, because 233031405133 - 2¹⁷ = 233031274061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233031405833) 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, 5146516 + ... + 5191597.

It is an arithmetic number, because the mean of its divisors is an integer number (58260441447).

Almost surely, 2^233031405133 is an apocalyptic number.

It is an amenable number.

233031405133 is a deficient number, since it is larger than the sum of its proper divisors (10360655).

233031405133 is a wasteful number, since it uses less digits than its factorization.

233031405133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10360654.

The product of its (nonzero) digits is 9720, while the sum is 28.

Adding to 233031405133 its reverse (331504130332), we get a palindrome (564535535465).

The spelling of 233031405133 in words is "two hundred thirty-three billion, thirty-one million, four hundred five thousand, one hundred thirty-three".