31133200233 has 4 divisors (see below), whose sum is σ = 41510933648. Its totient is φ = 20755466820.

The previous prime is 31133200229. The next prime is 31133200261. The reversal of 31133200233 is 33200233113.

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 31133200233 - 2² = 31133200229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31133207233) 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, 5188866703 + ... + 5188866708.

It is an arithmetic number, because the mean of its divisors is an integer number (10377733412).

Almost surely, 2^31133200233 is an apocalyptic number.

It is an amenable number.

31133200233 is a deficient number, since it is larger than the sum of its proper divisors (10377733415).

31133200233 is a wasteful number, since it uses less digits than its factorization.

31133200233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10377733414.

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 31133200233 its reverse (33200233113), we get a palindrome (64333433346).

The spelling of 31133200233 in words is "thirty-one billion, one hundred thirty-three million, two hundred thousand, two hundred thirty-three".