20123310132 has 36 divisors (see below), whose sum is σ = 50951112576. Its totient is φ = 6696712080.

The previous prime is 20123310131. The next prime is 20123310143. The reversal of 20123310132 is 23101332102.

20123310132 is a `hidden beast` number, since 201 + 2 + 331 + 0 + 132 = 666.

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

It is a super-2 number, since 2×20123310132² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123310131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 438594 + ... + 482297.

Almost surely, 2^20123310132 is an apocalyptic number.

It is an amenable number.

20123310132 is an abundant number, since it is smaller than the sum of its proper divisors (30827802444).

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

20123310132 is a wasteful number, since it uses less digits than its factorization.

20123310132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921508 (or 921503 counting only the distinct ones).

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

Adding to 20123310132 its reverse (23101332102), we get a palindrome (43224642234).

The spelling of 20123310132 in words is "twenty billion, one hundred twenty-three million, three hundred ten thousand, one hundred thirty-two".