20311323021132 has 48 divisors (see below), whose sum is σ = 55678591782912. Its totient is φ = 5681488956480.

The previous prime is 20311323021103. The next prime is 20311323021151. The reversal of 20311323021132 is 23112032311302.

It is a super-2 number, since 2×20311323021132² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5918215948 + ... + 5918219379.

It is an arithmetic number, because the mean of its divisors is an integer number (1159970662144).

Almost surely, 2^{20311323021132} is an apocalyptic number.

20311323021132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20311323021132 is an abundant number, since it is smaller than the sum of its proper divisors (35367268761780).

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

20311323021132 is a wasteful number, since it uses less digits than its factorization.

20311323021132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11836435358 (or 11836435356 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 20311323021132 its reverse (23112032311302), we get a palindrome (43423355332434).

The spelling of 20311323021132 in words is "twenty trillion, three hundred eleven billion, three hundred twenty-three million, twenty-one thousand, one hundred thirty-two".