2621313 has 6 divisors (see below), whose sum is σ = 3786354. Its totient is φ = 1747536.

The previous prime is 2621309. The next prime is 2621347. The reversal of 2621313 is 3131262.

It can be written as a sum of positive squares in only one way, i.e., 2169729 + 451584 = 1473^2 + 672^2 .

It is not a de Polignac number, because 2621313 - 2² = 2621309 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2621303) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 145620 + ... + 145637.

It is an arithmetic number, because the mean of its divisors is an integer number (631059).

2^2621313 is an apocalyptic number.

It is an amenable number.

2621313 is a deficient number, since it is larger than the sum of its proper divisors (1165041).

2621313 is a wasteful number, since it uses less digits than its factorization.

2621313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291263 (or 291260 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 2621313 is about 1619.0469418766. The cubic root of 2621313 is about 137.8815934561.

Adding to 2621313 its reverse (3131262), we get a palindrome (5752575).

The spelling of 2621313 in words is "two million, six hundred twenty-one thousand, three hundred thirteen".