31340017 has 4 divisors (see below), whose sum is σ = 31392256. Its totient is φ = 31287780.

The previous prime is 31340009. The next prime is 31340051. The reversal of 31340017 is 71004313.

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, and also an emirpimes, since its reverse is a distinct semiprime: 71004313 = 101 ⋅703013.

It is a cyclic number.

It is not a de Polignac number, because 31340017 - 2³ = 31340009 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31339976 and 31340003.

It is not an unprimeable number, because it can be changed into a prime (31340087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25209 + ... + 26422.

It is an arithmetic number, because the mean of its divisors is an integer number (7848064).

Almost surely, 2^31340017 is an apocalyptic number.

It is an amenable number.

31340017 is a deficient number, since it is larger than the sum of its proper divisors (52239).

31340017 is an equidigital number, since it uses as much as digits as its factorization.

31340017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52238.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 31340017 is about 5598.2155192525. The cubic root of 31340017 is about 315.2824107105.

The spelling of 31340017 in words is "thirty-one million, three hundred forty thousand, seventeen".