2331423661 has 4 divisors (see below), whose sum is σ = 2664484192. Its totient is φ = 1998363132.

The previous prime is 2331423547. The next prime is 2331423701. The reversal of 2331423661 is 1663241332.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2331423661 - 2¹¹ = 2331421613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2331423461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166530255 + ... + 166530268.

It is an arithmetic number, because the mean of its divisors is an integer number (666121048).

Almost surely, 2^2331423661 is an apocalyptic number.

It is an amenable number.

2331423661 is a deficient number, since it is larger than the sum of its proper divisors (333060531).

2331423661 is an equidigital number, since it uses as much as digits as its factorization.

2331423661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333060530.

The product of its digits is 15552, while the sum is 31.

The square root of 2331423661 is about 48284.8181212273. The cubic root of 2331423661 is about 1325.9904612317.

Adding to 2331423661 its reverse (1663241332), we get a palindrome (3994664993).

The spelling of 2331423661 in words is "two billion, three hundred thirty-one million, four hundred twenty-three thousand, six hundred sixty-one".