231213133033 has 4 divisors (see below), whose sum is σ = 231251604048. Its totient is φ = 231174662020.

The previous prime is 231213133031. The next prime is 231213133037. The reversal of 231213133033 is 330331312132.

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 a cyclic number.

It is not a de Polignac number, because 231213133033 - 2¹ = 231213133031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231213132989 and 231213133007.

It is not an unprimeable number, because it can be changed into a prime (231213133031) 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, 19226491 + ... + 19238512.

It is an arithmetic number, because the mean of its divisors is an integer number (57812901012).

Almost surely, 2^231213133033 is an apocalyptic number.

It is an amenable number.

231213133033 is a deficient number, since it is larger than the sum of its proper divisors (38471015).

231213133033 is an equidigital number, since it uses as much as digits as its factorization.

231213133033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38471014.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 231213133033 its reverse (330331312132), we get a palindrome (561544445165).

The spelling of 231213133033 in words is "two hundred thirty-one billion, two hundred thirteen million, one hundred thirty-three thousand, thirty-three".