23133221430 has 128 divisors (see below), whose sum is σ = 63846420480. Its totient is φ = 5305253760.

The previous prime is 23133221407. The next prime is 23133221431. The reversal of 23133221430 is 3412233132.

It is a super-2 number, since 2×23133221430² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23133221430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23133221431) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5157969 + ... + 5162451.

It is an arithmetic number, because the mean of its divisors is an integer number (498800160).

Almost surely, 2^23133221430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23133221430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31923210240).

23133221430 is an abundant number, since it is smaller than the sum of its proper divisors (40713199050).

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

23133221430 is a wasteful number, since it uses less digits than its factorization.

23133221430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5346.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 23133221430 its reverse (3412233132), we get a palindrome (26545454562).

The spelling of 23133221430 in words is "twenty-three billion, one hundred thirty-three million, two hundred twenty-one thousand, four hundred thirty".