2623281 has 4 divisors (see below), whose sum is σ = 3497712. Its totient is φ = 1748852.

The previous prime is 2623279. The next prime is 2623289. The reversal of 2623281 is 1823262.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2623281 - 2¹ = 2623279 is a prime.

It is a super-2 number, since 2×2623281² = 13763206409922, which contains 22 as substring.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2623289) 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, 437211 + ... + 437216.

It is an arithmetic number, because the mean of its divisors is an integer number (874428).

2^2623281 is an apocalyptic number.

It is an amenable number.

2623281 is a deficient number, since it is larger than the sum of its proper divisors (874431).

2623281 is an equidigital number, since it uses as much as digits as its factorization.

2623281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874430.

The product of its digits is 1152, while the sum is 24.

The square root of 2623281 is about 1619.6545928068. The cubic root of 2623281 is about 137.9160905570.

The spelling of 2623281 in words is "two million, six hundred twenty-three thousand, two hundred eighty-one".