2281213 has 12 divisors (see below), whose sum is σ = 2657340. Its totient is φ = 1950080.

The previous prime is 2281211. The next prime is 2281219. The reversal of 2281213 is 3121822.

It can be written as a sum of positive squares in 2 ways, for example, as 736164 + 1545049 = 858^2 + 1243^2 .

It is not a de Polignac number, because 2281213 - 2¹ = 2281211 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 (2281211) 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, 1503 + ... + 2611.

It is an arithmetic number, because the mean of its divisors is an integer number (221445).

2^2281213 is an apocalyptic number.

It is an amenable number.

2281213 is a deficient number, since it is larger than the sum of its proper divisors (376127).

2281213 is a wasteful number, since it uses less digits than its factorization.

2281213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148 (or 1137 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

The square root of 2281213 is about 1510.3684980825. The cubic root of 2281213 is about 131.6402239978.

It can be divided in two parts, 228 and 1213, that added together give a palindrome (1441).

The spelling of 2281213 in words is "two million, two hundred eighty-one thousand, two hundred thirteen".