31124017 has 4 divisors (see below), whose sum is σ = 31369216. Its totient is φ = 30878820.

The previous prime is 31124003. The next prime is 31124021. The reversal of 31124017 is 71042113.

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 a de Polignac number, because none of the positive numbers 2^k-31124017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31123985 and 31124003.

It is not an unprimeable number, because it can be changed into a prime (31134017) 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, 122409 + ... + 122662.

It is an arithmetic number, because the mean of its divisors is an integer number (7842304).

Almost surely, 2^31124017 is an apocalyptic number.

It is an amenable number.

31124017 is a deficient number, since it is larger than the sum of its proper divisors (245199).

31124017 is a wasteful number, since it uses less digits than its factorization.

31124017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245198.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 31124017 is about 5578.8903018432. The cubic root of 31124017 is about 314.5564160333.

The spelling of 31124017 in words is "thirty-one million, one hundred twenty-four thousand, seventeen".