20321123132 has 12 divisors (see below), whose sum is σ = 35583284520. Its totient is φ = 10154470416.

The previous prime is 20321123129. The next prime is 20321123149. The reversal of 20321123132 is 23132112302.

It is a congruent number.

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, 1515278 + ... + 1528629.

It is an arithmetic number, because the mean of its divisors is an integer number (2965273710).

Almost surely, 2^20321123132 is an apocalyptic number.

It is an amenable number.

20321123132 is a deficient number, since it is larger than the sum of its proper divisors (15262161388).

20321123132 is a wasteful number, since it uses less digits than its factorization.

20321123132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3045580 (or 3045578 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20321123132 its reverse (23132112302), we get a palindrome (43453235434).

The spelling of 20321123132 in words is "twenty billion, three hundred twenty-one million, one hundred twenty-three thousand, one hundred thirty-two".