31930417 has 4 divisors (see below), whose sum is σ = 33318720. Its totient is φ = 30542116.

The previous prime is 31930411. The next prime is 31930439. The reversal of 31930417 is 71403913.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31930417 - 2⁷ = 31930289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31930411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 694117 + ... + 694162.

It is an arithmetic number, because the mean of its divisors is an integer number (8329680).

Almost surely, 2^31930417 is an apocalyptic number.

It is an amenable number.

31930417 is a deficient number, since it is larger than the sum of its proper divisors (1388303).

31930417 is a wasteful number, since it uses less digits than its factorization.

31930417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1388302.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 31930417 is about 5650.7005760348. The cubic root of 31930417 is about 317.2499264657.

The spelling of 31930417 in words is "thirty-one million, nine hundred thirty thousand, four hundred seventeen".