16311204 has 108 divisors (see below), whose sum is σ = 51158016. Its totient is φ = 4290624.

The previous prime is 16311173. The next prime is 16311223. The reversal of 16311204 is 40211361.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 42397 + ... + 42779.

Almost surely, 2^16311204 is an apocalyptic number.

16311204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16311204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25579008).

16311204 is an abundant number, since it is smaller than the sum of its proper divisors (34846812).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16311204 is a wasteful number, since it uses less digits than its factorization.

16311204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 16311204 is about 4038.7131613919. The cubic root of 16311204 is about 253.6074495186.

Adding to 16311204 its reverse (40211361), we get a palindrome (56522565).

The spelling of 16311204 in words is "sixteen million, three hundred eleven thousand, two hundred four".