12311032020 has 192 divisors, whose sum is σ = 39871512576. Its totient is φ = 2780144640.

The previous prime is 12311032009. The next prime is 12311032031. The reversal of 12311032020 is 2023011321.

It is an interprime number because it is at equal distance from previous prime (12311032009) and next prime (12311032031).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 23629360 + ... + 23629880.

It is an arithmetic number, because the mean of its divisors is an integer number (207664128).

Almost surely, 2^12311032020 is an apocalyptic number.

12311032020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12311032020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19935756288).

12311032020 is an abundant number, since it is smaller than the sum of its proper divisors (27560480556).

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

12311032020 is a wasteful number, since it uses less digits than its factorization.

12311032020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110 (or 1108 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12311032020 its reverse (2023011321), we get a palindrome (14334043341).

The spelling of 12311032020 in words is "twelve billion, three hundred eleven million, thirty-two thousand, twenty".