31233033213 has 4 divisors (see below), whose sum is σ = 41644044288. Its totient is φ = 20822022140.

The previous prime is 31233033193. The next prime is 31233033239.

31233033213 is nontrivially palindromic in base 10.

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 31233033213 - 2¹⁰ = 31233032189 is a prime.

It is a super-2 number, since 2×31233033213² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31233033113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5205505533 + ... + 5205505538.

It is an arithmetic number, because the mean of its divisors is an integer number (10411011072).

Almost surely, 2^31233033213 is an apocalyptic number.

It is an amenable number.

31233033213 is a deficient number, since it is larger than the sum of its proper divisors (10411011075).

31233033213 is a wasteful number, since it uses less digits than its factorization.

31233033213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10411011074.

The product of its (nonzero) digits is 2916, while the sum is 24.

It can be divided in two parts, 312330 and 33213, that added together give a palindrome (345543).

The spelling of 31233033213 in words is "thirty-one billion, two hundred thirty-three million, thirty-three thousand, two hundred thirteen".