31368653 has 2 divisors, whose sum is σ = 31368654. Its totient is φ = 31368652.

The previous prime is 31368647. The next prime is 31368661. The reversal of 31368653 is 35686313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22108804 + 9259849 = 4702^2 + 3043^2 .

It is a cyclic number.

It is not a de Polignac number, because 31368653 - 2⁸ = 31368397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31368613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15684326 + 15684327.

It is an arithmetic number, because the mean of its divisors is an integer number (15684327).

Almost surely, 2^31368653 is an apocalyptic number.

It is an amenable number.

31368653 is a deficient number, since it is larger than the sum of its proper divisors (1).

31368653 is an equidigital number, since it uses as much as digits as its factorization.

31368653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 35.

The square root of 31368653 is about 5600.7725359989. The cubic root of 31368653 is about 315.3784080918.

The spelling of 31368653 in words is "thirty-one million, three hundred sixty-eight thousand, six hundred fifty-three".