12517031 has 4 divisors (see below), whose sum is σ = 12641064. Its totient is φ = 12393000.

The previous prime is 12517019. The next prime is 12517033. The reversal of 12517031 is 13071521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12517031 - 2¹⁴ = 12500647 is a prime.

It is a super-4 number, since 4×12517031⁴ (a number of 29 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12516994 and 12517012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12517033) 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, 61865 + ... + 62066.

It is an arithmetic number, because the mean of its divisors is an integer number (3160266).

Almost surely, 2^12517031 is an apocalyptic number.

12517031 is a deficient number, since it is larger than the sum of its proper divisors (124033).

12517031 is a wasteful number, since it uses less digits than its factorization.

12517031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124032.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 12517031 is about 3537.9416332099. The cubic root of 12517031 is about 232.1847950471.

Adding to 12517031 its reverse (13071521), we get a palindrome (25588552).

The spelling of 12517031 in words is "twelve million, five hundred seventeen thousand, thirty-one".