2265631 has 2 divisors, whose sum is σ = 2265632. Its totient is φ = 2265630.

The previous prime is 2265623. The next prime is 2265643. The reversal of 2265631 is 1365622.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2265631 - 2³ = 2265623 is a prime.

It is a super-2 number, since 2×2265631² = 10266167656322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2265596 and 2265605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2265611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1132815 + 1132816.

It is an arithmetic number, because the mean of its divisors is an integer number (1132816).

2^2265631 is an apocalyptic number.

2265631 is a deficient number, since it is larger than the sum of its proper divisors (1).

2265631 is an equidigital number, since it uses as much as digits as its factorization.

2265631 is an evil number, because the sum of its binary digits is even.

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

The square root of 2265631 is about 1505.2013154392. The cubic root of 2265631 is about 131.3398127535.

Subtracting from 2265631 its reverse (1365622), we obtain a palindrome (900009).

The spelling of 2265631 in words is "two million, two hundred sixty-five thousand, six hundred thirty-one".