2331663 has 4 divisors (see below), whose sum is σ = 3108888. Its totient is φ = 1554440.

The previous prime is 2331653. The next prime is 2331677. The reversal of 2331663 is 3661332.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2331663 - 2⁴ = 2331647 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331613) 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, 388608 + ... + 388613.

It is an arithmetic number, because the mean of its divisors is an integer number (777222).

2^2331663 is an apocalyptic number.

2331663 is a deficient number, since it is larger than the sum of its proper divisors (777225).

2331663 is an equidigital number, since it uses as much as digits as its factorization.

2331663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777224.

The product of its digits is 1944, while the sum is 24.

The square root of 2331663 is about 1526.9783888451. The cubic root of 2331663 is about 132.6035834134.

Adding to 2331663 its reverse (3661332), we get a palindrome (5992995).

The spelling of 2331663 in words is "two million, three hundred thirty-one thousand, six hundred sixty-three".