2231321023 has 4 divisors (see below), whose sum is σ = 2231425480. Its totient is φ = 2231216568.

The previous prime is 2231321021. The next prime is 2231321051. The reversal of 2231321023 is 3201231322.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2231321023 - 2¹ = 2231321021 is a prime.

It is a super-3 number, since 3×2231321023³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231321021) 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, 7308 + ... + 67201.

It is an arithmetic number, because the mean of its divisors is an integer number (557856370).

Almost surely, 2^2231321023 is an apocalyptic number.

2231321023 is a deficient number, since it is larger than the sum of its proper divisors (104457).

2231321023 is an equidigital number, since it uses as much as digits as its factorization.

2231321023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104456.

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

The square root of 2231321023 is about 47236.8608503994. The cubic root of 2231321023 is about 1306.7344851552.

Adding to 2231321023 its reverse (3201231322), we get a palindrome (5432552345).

The spelling of 2231321023 in words is "two billion, two hundred thirty-one million, three hundred twenty-one thousand, twenty-three".