12131015 has 16 divisors (see below), whose sum is σ = 15774528. Its totient is φ = 8902656.

The previous prime is 12130999. The next prime is 12131017. The reversal of 12131015 is 51013121.

It is a cyclic number.

It is not a de Polignac number, because 12131015 - 2⁴ = 12130999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131017) 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 15 ways as a sum of consecutive naturals, for example, 12062 + ... + 13028.

It is an arithmetic number, because the mean of its divisors is an integer number (985908).

Almost surely, 2^12131015 is an apocalyptic number.

12131015 is a deficient number, since it is larger than the sum of its proper divisors (3643513).

12131015 is a wasteful number, since it uses less digits than its factorization.

12131015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 12131015 is about 3482.9606658703. The cubic root of 12131015 is about 229.7730275066.

Adding to 12131015 its reverse (51013121), we get a palindrome (63144136).

The spelling of 12131015 in words is "twelve million, one hundred thirty-one thousand, fifteen".