20013312132 has 36 divisors (see below), whose sum is σ = 55188225456. Its totient is φ = 6064639920.

The previous prime is 20013312131. The next prime is 20013312133. The reversal of 20013312132 is 23121331002.

20013312132 is a `hidden beast` number, since 200 + 1 + 331 + 2 + 132 = 666.

It is an interprime number because it is at equal distance from previous prime (20013312131) and next prime (20013312133).

It is a tau number, because it is divible by the number of its divisors (36).

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

It is not an unprimeable number, because it can be changed into a prime (20013312131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25268938 + ... + 25269729.

Almost surely, 2^20013312132 is an apocalyptic number.

20013312132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20013312132 is an abundant number, since it is smaller than the sum of its proper divisors (35174913324).

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

20013312132 is a wasteful number, since it uses less digits than its factorization.

20013312132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50538688 (or 50538683 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20013312132 its reverse (23121331002), we get a palindrome (43134643134).

It can be divided in two parts, 2001 and 3312132, that added together give a palindrome (3314133).

The spelling of 20013312132 in words is "twenty billion, thirteen million, three hundred twelve thousand, one hundred thirty-two".