2019312 has 60 divisors (see below), whose sum is σ = 5819320. Its totient is φ = 653184.

The previous prime is 2019289. The next prime is 2019317. The reversal of 2019312 is 2139102.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2019317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5139 + ... + 5517.

2^2019312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2019312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2909660).

2019312 is an abundant number, since it is smaller than the sum of its proper divisors (3800008).

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

2019312 is a wasteful number, since it uses less digits than its factorization.

2019312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 2019312 is about 1421.0249821872. The cubic root of 2019312 is about 126.3963332804.

The spelling of 2019312 in words is "two million, nineteen thousand, three hundred twelve".