31241224117 has 2 divisors, whose sum is σ = 31241224118. Its totient is φ = 31241224116.

The previous prime is 31241224097. The next prime is 31241224163. The reversal of 31241224117 is 71142214213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30030810436 + 1210413681 = 173294^2 + 34791^2 .

It is a cyclic number.

It is not a de Polignac number, because 31241224117 - 2¹⁵ = 31241191349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31241224187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15620612058 + 15620612059.

It is an arithmetic number, because the mean of its divisors is an integer number (15620612059).

Almost surely, 2^31241224117 is an apocalyptic number.

It is an amenable number.

31241224117 is a deficient number, since it is larger than the sum of its proper divisors (1).

31241224117 is an equidigital number, since it uses as much as digits as its factorization.

31241224117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 28.

The spelling of 31241224117 in words is "thirty-one billion, two hundred forty-one million, two hundred twenty-four thousand, one hundred seventeen".