31133133033 has 4 divisors (see below), whose sum is σ = 41510844048. Its totient is φ = 20755422020.

The previous prime is 31133133023. The next prime is 31133133047. The reversal of 31133133033 is 33033133113.

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 31133133033 - 2²⁰ = 31132084457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31133132994 and 31133133012.

It is not an unprimeable number, because it can be changed into a prime (31133133023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5188855503 + ... + 5188855508.

It is an arithmetic number, because the mean of its divisors is an integer number (10377711012).

Almost surely, 2^31133133033 is an apocalyptic number.

It is an amenable number.

31133133033 is a deficient number, since it is larger than the sum of its proper divisors (10377711015).

31133133033 is a wasteful number, since it uses less digits than its factorization.

31133133033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10377711014.

The product of its (nonzero) digits is 2187, while the sum is 24.

Adding to 31133133033 its reverse (33033133113), we get a palindrome (64166266146).

The spelling of 31133133033 in words is "thirty-one billion, one hundred thirty-three million, one hundred thirty-three thousand, thirty-three".