2731312 has 10 divisors (see below), whose sum is σ = 5291948. Its totient is φ = 1365648.

The previous prime is 2731291. The next prime is 2731327. The reversal of 2731312 is 2131372.

It is a zygodrome in base 5.

It is a self number, because there is not a number n which added to its sum of digits gives 2731312.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85338 + ... + 85369.

2^2731312 is an apocalyptic number.

It is an amenable number.

2731312 is a deficient number, since it is larger than the sum of its proper divisors (2560636).

2731312 is a wasteful number, since it uses less digits than its factorization.

2731312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170715 (or 170709 counting only the distinct ones).

The product of its digits is 252, while the sum is 19.

The square root of 2731312 is about 1652.6681457570. The cubic root of 2731312 is about 139.7838842443.

Adding to 2731312 its reverse (2131372), we get a palindrome (4862684).

The spelling of 2731312 in words is "two million, seven hundred thirty-one thousand, three hundred twelve".