31244325566693 has 2 divisors, whose sum is σ = 31244325566694. Its totient is φ = 31244325566692.

The previous prime is 31244325566681. The next prime is 31244325566717. The reversal of 31244325566693 is 39666552344213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30630989113729 + 613336452964 = 5534527^2 + 783158^2 .

It is an emirp because it is prime and its reverse (39666552344213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31244325566693 - 2⁸ = 31244325566437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31244325566593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15622162783346 + 15622162783347.

It is an arithmetic number, because the mean of its divisors is an integer number (15622162783347).

Almost surely, 2^{31244325566693} is an apocalyptic number.

It is an amenable number.

31244325566693 is a deficient number, since it is larger than the sum of its proper divisors (1).

31244325566693 is an equidigital number, since it uses as much as digits as its factorization.

31244325566693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 83980800, while the sum is 59.

The spelling of 31244325566693 in words is "thirty-one trillion, two hundred forty-four billion, three hundred twenty-five million, five hundred sixty-six thousand, six hundred ninety-three".