12198311 has 4 divisors (see below), whose sum is σ = 12352800. Its totient is φ = 12043824.

The previous prime is 12198301. The next prime is 12198331. The reversal of 12198311 is 11389121.

12198311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11389121 = 31 ⋅367391.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12198311 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 (12198301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77126 + ... + 77283.

It is an arithmetic number, because the mean of its divisors is an integer number (3088200).

Almost surely, 2^12198311 is an apocalyptic number.

12198311 is a deficient number, since it is larger than the sum of its proper divisors (154489).

12198311 is an equidigital number, since it uses as much as digits as its factorization.

12198311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154488.

The product of its digits is 432, while the sum is 26.

The square root of 12198311 is about 3492.6080512992. The cubic root of 12198311 is about 230.1971277844.

It can be divided in two parts, 12 and 198311, that multiplied together give a palindrome (2379732).

The spelling of 12198311 in words is "twelve million, one hundred ninety-eight thousand, three hundred eleven".