201321231232 has 64 divisors (see below), whose sum is σ = 444061031040. Its totient is φ = 90143792640.

The previous prime is 201321231203. The next prime is 201321231259. The reversal of 201321231232 is 232132123102.

It is a tau number, because it is divible by the number of its divisors (64).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 972708 + ... + 1161379.

It is an arithmetic number, because the mean of its divisors is an integer number (6938453610).

Almost surely, 2^201321231232 is an apocalyptic number.

201321231232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

201321231232 is an abundant number, since it is smaller than the sum of its proper divisors (242739799808).

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

201321231232 is a wasteful number, since it uses less digits than its factorization.

201321231232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134179 (or 2134167 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 201321231232 its reverse (232132123102), we get a palindrome (433453354334).

The spelling of 201321231232 in words is "two hundred one billion, three hundred twenty-one million, two hundred thirty-one thousand, two hundred thirty-two".