2256631 has 8 divisors (see below), whose sum is σ = 2573424. Its totient is φ = 1960320.

The previous prime is 2256629. The next prime is 2256637. The reversal of 2256631 is 1366522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2256631 - 2¹ = 2256629 is a prime.

It is a super-2 number, since 2×2256631² = 10184766940322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2256596 and 2256605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2256637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4885 + ... + 5326.

It is an arithmetic number, because the mean of its divisors is an integer number (321678).

2^2256631 is an apocalyptic number.

2256631 is a deficient number, since it is larger than the sum of its proper divisors (316793).

2256631 is a wasteful number, since it uses less digits than its factorization.

2256631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10241.

The product of its digits is 2160, while the sum is 25.

The square root of 2256631 is about 1502.2087072042. The cubic root of 2256631 is about 131.1656703943.

The spelling of 2256631 in words is "two million, two hundred fifty-six thousand, six hundred thirty-one".