31040459 has 2 divisors, whose sum is σ = 31040460. Its totient is φ = 31040458.

The previous prime is 31040413. The next prime is 31040461. The reversal of 31040459 is 95404013.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31040459 is a prime.

Together with 31040461, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31040489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15520229 + 15520230.

It is an arithmetic number, because the mean of its divisors is an integer number (15520230).

Almost surely, 2^31040459 is an apocalyptic number.

31040459 is a deficient number, since it is larger than the sum of its proper divisors (1).

31040459 is an equidigital number, since it uses as much as digits as its factorization.

31040459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 31040459 is about 5571.3965035707. The cubic root of 31040459 is about 314.2746693974.

The spelling of 31040459 in words is "thirty-one million, forty thousand, four hundred fifty-nine".