231033313133 has 4 divisors (see below), whose sum is σ = 264038072160. Its totient is φ = 198028554108.

The previous prime is 231033313123. The next prime is 231033313169. The reversal of 231033313133 is 331313330132.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 231033313133 - 2⁸ = 231033312877 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 (231033313123) 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, 16502379503 + ... + 16502379516.

It is an arithmetic number, because the mean of its divisors is an integer number (66009518040).

Almost surely, 2^231033313133 is an apocalyptic number.

It is an amenable number.

231033313133 is a deficient number, since it is larger than the sum of its proper divisors (33004759027).

231033313133 is an equidigital number, since it uses as much as digits as its factorization.

231033313133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33004759026.

The product of its (nonzero) digits is 4374, while the sum is 26.

Adding to 231033313133 its reverse (331313330132), we get a palindrome (562346643265).

The spelling of 231033313133 in words is "two hundred thirty-one billion, thirty-three million, three hundred thirteen thousand, one hundred thirty-three".