12180311 has 16 divisors (see below), whose sum is σ = 15066240. Its totient is φ = 9681120.

The previous prime is 12180307. The next prime is 12180323. The reversal of 12180311 is 11308121.

It is a cyclic number.

It is not a de Polignac number, because 12180311 - 2² = 12180307 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12180311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12180331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 476 + ... + 4958.

It is an arithmetic number, because the mean of its divisors is an integer number (941640).

Almost surely, 2^12180311 is an apocalyptic number.

12180311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12180311 is a deficient number, since it is larger than the sum of its proper divisors (2885929).

12180311 is a wasteful number, since it uses less digits than its factorization.

12180311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4526.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 12180311 is about 3490.0302290954. The cubic root of 12180311 is about 230.0838446677.

Adding to 12180311 its reverse (11308121), we get a palindrome (23488432).

The spelling of 12180311 in words is "twelve million, one hundred eighty thousand, three hundred eleven".