23220304431 has 4 divisors (see below), whose sum is σ = 30960405912. Its totient is φ = 15480202952.

The previous prime is 23220304427. The next prime is 23220304439. The reversal of 23220304431 is 13440302232.

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 23220304431 - 2² = 23220304427 is a prime.

It is a super-2 number, since 2×23220304431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23220304439) by changing a digit.

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, 3870050736 + ... + 3870050741.

It is an arithmetic number, because the mean of its divisors is an integer number (7740101478).

Almost surely, 2^23220304431 is an apocalyptic number.

23220304431 is a deficient number, since it is larger than the sum of its proper divisors (7740101481).

23220304431 is an equidigital number, since it uses as much as digits as its factorization.

23220304431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7740101480.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 23220304431 its reverse (13440302232), we get a palindrome (36660606663).

The spelling of 23220304431 in words is "twenty-three billion, two hundred twenty million, three hundred four thousand, four hundred thirty-one".