233131032231 has 4 divisors (see below), whose sum is σ = 310841376312. Its totient is φ = 155420688152.

The previous prime is 233131032229. The next prime is 233131032287. The reversal of 233131032231 is 132230131332.

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

It is a cyclic number.

It is not a de Polignac number, because 233131032231 - 2¹ = 233131032229 is a prime.

It is a super-2 number, since 2×233131032231² (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 (233131032131) 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, 38855172036 + ... + 38855172041.

It is an arithmetic number, because the mean of its divisors is an integer number (77710344078).

Almost surely, 2^233131032231 is an apocalyptic number.

233131032231 is a deficient number, since it is larger than the sum of its proper divisors (77710344081).

233131032231 is an equidigital number, since it uses as much as digits as its factorization.

233131032231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77710344080.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 233131032231 its reverse (132230131332), we get a palindrome (365361163563).

The spelling of 233131032231 in words is "two hundred thirty-three billion, one hundred thirty-one million, thirty-two thousand, two hundred thirty-one".