23220320232 has 32 divisors (see below), whose sum is σ = 58215271680. Its totient is φ = 7718177280.

The previous prime is 23220320203. The next prime is 23220320237. The reversal of 23220320232 is 23202302232.

It is a junction number, because it is equal to n+sod(n) for n = 23220320199 and 23220320208.

It is not an unprimeable number, because it can be changed into a prime (23220320237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1361944 + ... + 1378887.

It is an arithmetic number, because the mean of its divisors is an integer number (1819227240).

Almost surely, 2^23220320232 is an apocalyptic number.

It is an amenable number.

23220320232 is an abundant number, since it is smaller than the sum of its proper divisors (34994951448).

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

23220320232 is a wasteful number, since it uses less digits than its factorization.

23220320232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2741193 (or 2741189 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 21.

Adding to 23220320232 its reverse (23202302232), we get a palindrome (46422622464).

The spelling of 23220320232 in words is "twenty-three billion, two hundred twenty million, three hundred twenty thousand, two hundred thirty-two".