23231020032 has 132 divisors (see below), whose sum is σ = 73177482456. Its totient is φ = 7039672320.

The previous prime is 23231020003. The next prime is 23231020063. The reversal of 23231020032 is 23002013232.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (132).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 23231019987 and 23231020014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13203 + ... + 215954.

Almost surely, 2^23231020032 is an apocalyptic number.

23231020032 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23231020032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36588741228).

23231020032 is an abundant number, since it is smaller than the sum of its proper divisors (49946462424).

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

23231020032 is a wasteful number, since it uses less digits than its factorization.

23231020032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229194 (or 229173 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 23231020032 its reverse (23002013232), we get a palindrome (46233033264).

The spelling of 23231020032 in words is "twenty-three billion, two hundred thirty-one million, twenty thousand, thirty-two".