20120343232 has 56 divisors (see below), whose sum is σ = 43574086080. Its totient is φ = 9141807360.

The previous prime is 20120343211. The next prime is 20120343233. The reversal of 20120343232 is 23234302102.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (20120343233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2352019 + ... + 2360557.

It is an arithmetic number, because the mean of its divisors is an integer number (778108680).

Almost surely, 2^20120343232 is an apocalyptic number.

20120343232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20120343232 is an abundant number, since it is smaller than the sum of its proper divisors (23453742848).

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

20120343232 is a wasteful number, since it uses less digits than its factorization.

20120343232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11909 (or 11899 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 20120343232 its reverse (23234302102), we get a palindrome (43354645334).

The spelling of 20120343232 in words is "twenty billion, one hundred twenty million, three hundred forty-three thousand, two hundred thirty-two".