23031220211232 has 96 divisors (see below), whose sum is σ = 61012380461760. Its totient is φ = 7606588416000.

The previous prime is 23031220211213. The next prime is 23031220211303. The reversal of 23031220211232 is 23211202213032.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×23031220211232² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32201119 + ... + 32908577.

It is an arithmetic number, because the mean of its divisors is an integer number (635545629810).

Almost surely, 2^{23031220211232} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23031220211232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30506190230880).

23031220211232 is an abundant number, since it is smaller than the sum of its proper divisors (37981160250528).

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

23031220211232 is a wasteful number, since it uses less digits than its factorization.

23031220211232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710586 (or 710578 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 23031220211232 its reverse (23211202213032), we get a palindrome (46242422424264).

The spelling of 23031220211232 in words is "twenty-three trillion, thirty-one billion, two hundred twenty million, two hundred eleven thousand, two hundred thirty-two".