2981312 has 28 divisors (see below), whose sum is σ = 6080760. Its totient is φ = 1449216.

The previous prime is 2981311. The next prime is 2981323. The reversal of 2981312 is 2131892.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2981311) 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, 1739 + ... + 2997.

It is an arithmetic number, because the mean of its divisors is an integer number (217170).

2^2981312 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 2981312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3040380).

2981312 is an abundant number, since it is smaller than the sum of its proper divisors (3099448).

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

2981312 is a wasteful number, since it uses less digits than its factorization.

2981312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308 (or 1298 counting only the distinct ones).

The product of its digits is 864, while the sum is 26.

The square root of 2981312 is about 1726.6476189426. The cubic root of 2981312 is about 143.9248579155.

The spelling of 2981312 in words is "two million, nine hundred eighty-one thousand, three hundred twelve".