31248563 has 2 divisors, whose sum is σ = 31248564. Its totient is φ = 31248562.

The previous prime is 31248557. The next prime is 31248571. The reversal of 31248563 is 36584213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31248563 - 2¹⁸ = 30986419 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31248163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15624281 + 15624282.

It is an arithmetic number, because the mean of its divisors is an integer number (15624282).

Almost surely, 2^31248563 is an apocalyptic number.

31248563 is a deficient number, since it is larger than the sum of its proper divisors (1).

31248563 is an equidigital number, since it uses as much as digits as its factorization.

31248563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 32.

The square root of 31248563 is about 5590.0414130845. The cubic root of 31248563 is about 314.9754343822.

The spelling of 31248563 in words is "thirty-one million, two hundred forty-eight thousand, five hundred sixty-three".