31204440213 has 16 divisors (see below), whose sum is σ = 43245241536. Its totient is φ = 19996848000.

The previous prime is 31204440209. The next prime is 31204440227.

31204440213 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31204440213 - 2² = 31204440209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31204440283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1684288 + ... + 1702713.

It is an arithmetic number, because the mean of its divisors is an integer number (2702827596).

Almost surely, 2^31204440213 is an apocalyptic number.

It is an amenable number.

31204440213 is a deficient number, since it is larger than the sum of its proper divisors (12040801323).

31204440213 is a wasteful number, since it uses less digits than its factorization.

31204440213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3387124.

The product of its (nonzero) digits is 2304, while the sum is 24.

The spelling of 31204440213 in words is "thirty-one billion, two hundred four million, four hundred forty thousand, two hundred thirteen".