31914563 has 2 divisors, whose sum is σ = 31914564. Its totient is φ = 31914562.

The previous prime is 31914511. The next prime is 31914577. The reversal of 31914563 is 36541913.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31914563 - 2⁸ = 31914307 is a prime.

It is not a weakly prime, because it can be changed into another prime (31914503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15957281 + 15957282.

It is an arithmetic number, because the mean of its divisors is an integer number (15957282).

Almost surely, 2^31914563 is an apocalyptic number.

31914563 is a deficient number, since it is larger than the sum of its proper divisors (1).

31914563 is an equidigital number, since it uses as much as digits as its factorization.

31914563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 32.

The square root of 31914563 is about 5649.2975669547. The cubic root of 31914563 is about 317.1974110956.

The spelling of 31914563 in words is "thirty-one million, nine hundred fourteen thousand, five hundred sixty-three".