31244044213 has 2 divisors, whose sum is σ = 31244044214. Its totient is φ = 31244044212.

The previous prime is 31244044193. The next prime is 31244044243.

31244044213 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26220353329 + 5023690884 = 161927^2 + 70878^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 31244044213 - 2²⁵ = 31210489781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31244044243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15622022106 + 15622022107.

It is an arithmetic number, because the mean of its divisors is an integer number (15622022107).

Almost surely, 2^31244044213 is an apocalyptic number.

It is an amenable number.

31244044213 is a deficient number, since it is larger than the sum of its proper divisors (1).

31244044213 is an equidigital number, since it uses as much as digits as its factorization.

31244044213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 28.

It can be divided in two parts, 312440 and 44213, that added together give a palindrome (356653).

The spelling of 31244044213 in words is "thirty-one billion, two hundred forty-four million, forty-four thousand, two hundred thirteen".