31244644213 has 8 divisors (see below), whose sum is σ = 32323611096. Its totient is φ = 30180768000.

The previous prime is 31244644177. The next prime is 31244644229.

31244644213 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 904926724 + 30339717489 = 30082^2 + 174183^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31244644213 - 2¹³ = 31244636021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31244644243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3768456 + ... + 3776737.

It is an arithmetic number, because the mean of its divisors is an integer number (4040451387).

Almost surely, 2^31244644213 is an apocalyptic number.

It is an amenable number.

31244644213 is a deficient number, since it is larger than the sum of its proper divisors (1078966883).

31244644213 is a wasteful number, since it uses less digits than its factorization.

31244644213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7545335.

The product of its digits is 55296, while the sum is 34.

The spelling of 31244644213 in words is "thirty-one billion, two hundred forty-four million, six hundred forty-four thousand, two hundred thirteen".