31045017 has 4 divisors (see below), whose sum is σ = 41393360. Its totient is φ = 20696676.

The previous prime is 31045013. The next prime is 31045039. The reversal of 31045017 is 71054013.

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: 71054013 = 3 ⋅23684671.

It is not a de Polignac number, because 31045017 - 2² = 31045013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31044984 and 31045002.

It is not an unprimeable number, because it can be changed into a prime (31045013) 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, 5174167 + ... + 5174172.

It is an arithmetic number, because the mean of its divisors is an integer number (10348340).

Almost surely, 2^31045017 is an apocalyptic number.

It is an amenable number.

31045017 is a deficient number, since it is larger than the sum of its proper divisors (10348343).

31045017 is a wasteful number, since it uses less digits than its factorization.

31045017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10348342.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 31045017 is about 5571.8055421919. The cubic root of 31045017 is about 314.2900514061.

The spelling of 31045017 in words is "thirty-one million, forty-five thousand, seventeen".