31344017 has 4 divisors (see below), whose sum is σ = 31392240. Its totient is φ = 31295796.

The previous prime is 31344011. The next prime is 31344029. The reversal of 31344017 is 71044313.

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: 71044313 = 131 ⋅542323.

It is a cyclic number.

It is not a de Polignac number, because 31344017 - 2¹² = 31339921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31343983 and 31344001.

It is not an unprimeable number, because it can be changed into a prime (31344011) 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, 23123 + ... + 24440.

It is an arithmetic number, because the mean of its divisors is an integer number (7848060).

Almost surely, 2^31344017 is an apocalyptic number.

It is an amenable number.

31344017 is a deficient number, since it is larger than the sum of its proper divisors (48223).

31344017 is an equidigital number, since it uses as much as digits as its factorization.

31344017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48222.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 31344017 is about 5598.5727645535. The cubic root of 31344017 is about 315.2958235514.

It can be divided in two parts, 313440 and 17, that multiplied together give a triangular number (5328480 = T₃₂₆₄).

The spelling of 31344017 in words is "thirty-one million, three hundred forty-four thousand, seventeen".