31494263 has 2 divisors, whose sum is σ = 31494264. Its totient is φ = 31494262.

The previous prime is 31494257. The next prime is 31494293. The reversal of 31494263 is 36249413.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31494263 - 2⁴ = 31494247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31494293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15747131 + 15747132.

It is an arithmetic number, because the mean of its divisors is an integer number (15747132).

Almost surely, 2^31494263 is an apocalyptic number.

31494263 is a deficient number, since it is larger than the sum of its proper divisors (1).

31494263 is an equidigital number, since it uses as much as digits as its factorization.

31494263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 32.

The square root of 31494263 is about 5611.9749643062. The cubic root of 31494263 is about 315.7988057267.

The spelling of 31494263 in words is "thirty-one million, four hundred ninety-four thousand, two hundred sixty-three".