12078311 has 8 divisors (see below), whose sum is σ = 13881504. Its totient is φ = 10294560.

The previous prime is 12078299. The next prime is 12078323. The reversal of 12078311 is 11387021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12078299) and next prime (12078323).

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 12078311 - 2⁶ = 12078247 is a prime.

It is a super-2 number, since 2×12078311² = 291771193225442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12078511) 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 7 ways as a sum of consecutive naturals, for example, 3500 + ... + 6033.

It is an arithmetic number, because the mean of its divisors is an integer number (1735188).

Almost surely, 2^12078311 is an apocalyptic number.

12078311 is a deficient number, since it is larger than the sum of its proper divisors (1803193).

12078311 is an equidigital number, since it uses as much as digits as its factorization.

12078311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9721.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 12078311 is about 3475.3864533315. The cubic root of 12078311 is about 229.4397897245.

The spelling of 12078311 in words is "twelve million, seventy-eight thousand, three hundred eleven".