12345131 has 8 divisors (see below), whose sum is σ = 12664080. Its totient is φ = 12029472.

The previous prime is 12345127. The next prime is 12345143. The reversal of 12345131 is 13154321.

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 12345131 - 2² = 12345127 is a prime.

It is a super-2 number, since 2×12345131² = 304804518814322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12345121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7925 + ... + 9353.

It is an arithmetic number, because the mean of its divisors is an integer number (1583010).

Almost surely, 2^12345131 is an apocalyptic number.

12345131 is a deficient number, since it is larger than the sum of its proper divisors (318949).

12345131 is a wasteful number, since it uses less digits than its factorization.

12345131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645.

The product of its digits is 360, while the sum is 20.

The square root of 12345131 is about 3513.5638602422. The cubic root of 12345131 is about 231.1170049981.

Adding to 12345131 its reverse (13154321), we get a palindrome (25499452).

It can be divided in two parts, 123 and 45131, that added together give a palindrome (45254).

The spelling of 12345131 in words is "twelve million, three hundred forty-five thousand, one hundred thirty-one".