31244012413 has 2 divisors, whose sum is σ = 31244012414. Its totient is φ = 31244012412.

The previous prime is 31244012407. The next prime is 31244012441. The reversal of 31244012413 is 31421044213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23806329849 + 7437682564 = 154293^2 + 86242^2 .

It is a cyclic number.

It is not a de Polignac number, because 31244012413 - 2²¹ = 31241915261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31244018413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15622006206 + 15622006207.

It is an arithmetic number, because the mean of its divisors is an integer number (15622006207).

Almost surely, 2^31244012413 is an apocalyptic number.

It is an amenable number.

31244012413 is a deficient number, since it is larger than the sum of its proper divisors (1).

31244012413 is an equidigital number, since it uses as much as digits as its factorization.

31244012413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 31244012413 its reverse (31421044213), we get a palindrome (62665056626).

The spelling of 31244012413 in words is "thirty-one billion, two hundred forty-four million, twelve thousand, four hundred thirteen".