12517131 has 8 divisors (see below), whose sum is σ = 18206784. Its totient is φ = 7586120.

The previous prime is 12517103. The next prime is 12517133. The reversal of 12517131 is 13171521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12517131 - 2¹⁵ = 12484363 is a prime.

It is a super-2 number, since 2×12517131² = 313357136942322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12517098 and 12517107.

It is not an unprimeable number, because it can be changed into a prime (12517133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189621 + ... + 189686.

It is an arithmetic number, because the mean of its divisors is an integer number (2275848).

Almost surely, 2^12517131 is an apocalyptic number.

12517131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12517131 is a deficient number, since it is larger than the sum of its proper divisors (5689653).

12517131 is a wasteful number, since it uses less digits than its factorization.

12517131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379321.

The product of its digits is 210, while the sum is 21.

The square root of 12517131 is about 3537.9557656930. The cubic root of 12517131 is about 232.1854133624.

Adding to 12517131 its reverse (13171521), we get a palindrome (25688652).

The spelling of 12517131 in words is "twelve million, five hundred seventeen thousand, one hundred thirty-one".