20312321233132 has 12 divisors (see below), whose sum is σ = 36772305680880. Its totient is φ = 9805948181456.

The previous prime is 20312321233121. The next prime is 20312321233249. The reversal of 20312321233132 is 23133212321302.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20312321233132.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87553108648 + ... + 87553108879.

It is an arithmetic number, because the mean of its divisors is an integer number (3064358806740).

Almost surely, 2^{20312321233132} is an apocalyptic number.

It is an amenable number.

20312321233132 is a deficient number, since it is larger than the sum of its proper divisors (16459984447748).

20312321233132 is a wasteful number, since it uses less digits than its factorization.

20312321233132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175106217560 (or 175106217558 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 20312321233132 its reverse (23133212321302), we get a palindrome (43445533554434).

The spelling of 20312321233132 in words is "twenty trillion, three hundred twelve billion, three hundred twenty-one million, two hundred thirty-three thousand, one hundred thirty-two".