31342317 has 4 divisors (see below), whose sum is σ = 41789760. Its totient is φ = 20894876.

The previous prime is 31342277. The next prime is 31342319. The reversal of 31342317 is 71324313.

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: 71324313 = 3 ⋅23774771.

It is a cyclic number.

It is not a de Polignac number, because 31342317 - 2⁷ = 31342189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31342319) 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, 5223717 + ... + 5223722.

It is an arithmetic number, because the mean of its divisors is an integer number (10447440).

Almost surely, 2^31342317 is an apocalyptic number.

It is an amenable number.

31342317 is a deficient number, since it is larger than the sum of its proper divisors (10447443).

31342317 is a wasteful number, since it uses less digits than its factorization.

31342317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10447442.

The product of its digits is 1512, while the sum is 24.

The square root of 31342317 is about 5598.4209380860. The cubic root of 31342317 is about 315.2901232335.

The spelling of 31342317 in words is "thirty-one million, three hundred forty-two thousand, three hundred seventeen".