23031220030 has 64 divisors (see below), whose sum is σ = 51139081728. Its totient is φ = 7272420480.

The previous prime is 23031220021. The next prime is 23031220097. The reversal of 23031220030 is 3002213032.

It is a junction number, because it is equal to n+sod(n) for n = 23031219986 and 23031220013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 374565 + ... + 431695.

It is an arithmetic number, because the mean of its divisors is an integer number (799048152).

Almost surely, 2^23031220030 is an apocalyptic number.

23031220030 is an abundant number, since it is smaller than the sum of its proper divisors (28107861698).

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

23031220030 is a wasteful number, since it uses less digits than its factorization.

23031220030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57601.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 23031220030 its reverse (3002213032), we get a palindrome (26033433062).

The spelling of 23031220030 in words is "twenty-three billion, thirty-one million, two hundred twenty thousand, thirty".