2263381 has 2 divisors, whose sum is σ = 2263382. Its totient is φ = 2263380.

The previous prime is 2263369. The next prime is 2263411. The reversal of 2263381 is 1833622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2056356 + 207025 = 1434^2 + 455^2 .

It is a cyclic number.

It is not a de Polignac number, because 2263381 - 2¹⁷ = 2132309 is a prime.

It is a super-2 number, since 2×2263381² = 10245787102322, which contains 22 as substring.

2263381 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2263321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1131690 + 1131691.

It is an arithmetic number, because the mean of its divisors is an integer number (1131691).

2^2263381 is an apocalyptic number.

2263381 is the 952-nd centered pentagonal number.

It is an amenable number.

2263381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2263381 is an equidigital number, since it uses as much as digits as its factorization.

2263381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 25.

The square root of 2263381 is about 1504.4537214551. The cubic root of 2263381 is about 131.2963204610.

The spelling of 2263381 in words is "two million, two hundred sixty-three thousand, three hundred eighty-one".