2231623 has 2 divisors, whose sum is σ = 2231624. Its totient is φ = 2231622.

The previous prime is 2231617. The next prime is 2231627. The reversal of 2231623 is 3261322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2231623 - 2⁵ = 2231591 is a prime.

It is a super-3 number, since 3×2231623³ = 33341393030094604101, which contains 333 as substring.

It is a d-powerful number, because it can be written as 2¹¹ + 2¹⁷ + 3³ + 1 + 6⁴ + 2²¹ + 3³ .

It is a self number, because there is not a number n which added to its sum of digits gives 2231623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2231627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115811 + 1115812.

It is an arithmetic number, because the mean of its divisors is an integer number (1115812).

2^2231623 is an apocalyptic number.

2231623 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231623 is an equidigital number, since it uses as much as digits as its factorization.

2231623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 19.

The square root of 2231623 is about 1493.8617740608. The cubic root of 2231623 is about 130.6793431695.

Adding to 2231623 its reverse (3261322), we get a palindrome (5492945).

The spelling of 2231623 in words is "two million, two hundred thirty-one thousand, six hundred twenty-three".