31233132213 has 16 divisors (see below), whose sum is σ = 41935190400. Its totient is φ = 20676658496.

The previous prime is 31233132181. The next prime is 31233132223. The reversal of 31233132213 is 31223133213.

It is a cyclic number.

It is not a de Polignac number, because 31233132213 - 2⁵ = 31233132181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31233132223) 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 15 ways as a sum of consecutive naturals, for example, 2172856 + ... + 2187182.

It is an arithmetic number, because the mean of its divisors is an integer number (2620949400).

Almost surely, 2^31233132213 is an apocalyptic number.

It is an amenable number.

31233132213 is a deficient number, since it is larger than the sum of its proper divisors (10702058187).

31233132213 is a wasteful number, since it uses less digits than its factorization.

31233132213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19356.

The product of its digits is 1944, while the sum is 24.

Adding to 31233132213 its reverse (31223133213), we get a palindrome (62456265426).

The spelling of 31233132213 in words is "thirty-one billion, two hundred thirty-three million, one hundred thirty-two thousand, two hundred thirteen".