23305221320 has 16 divisors (see below), whose sum is σ = 52436748060. Its totient is φ = 9322088512.

The previous prime is 23305221319. The next prime is 23305221347. The reversal of 23305221320 is 2312250332.

It can be written as a sum of positive squares in 2 ways, for example, as 23288591236 + 16630084 = 152606^2 + 4078^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291315227 + ... + 291315306.

Almost surely, 2^23305221320 is an apocalyptic number.

23305221320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23305221320 is an abundant number, since it is smaller than the sum of its proper divisors (29131526740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23305221320 is a wasteful number, since it uses less digits than its factorization.

23305221320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582630544 (or 582630540 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

Adding to 23305221320 its reverse (2312250332), we get a palindrome (25617471652).

The spelling of 23305221320 in words is "twenty-three billion, three hundred five million, two hundred twenty-one thousand, three hundred twenty".