12312020 has 24 divisors (see below), whose sum is σ = 29549184. Its totient is φ = 4221216.

The previous prime is 12312017. The next prime is 12312023. The reversal of 12312020 is 2021321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12312017) and next prime (12312023).

It is a junction number, because it is equal to n+sod(n) for n = 12311992 and 12312010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43832 + ... + 44111.

It is an arithmetic number, because the mean of its divisors is an integer number (1231216).

Almost surely, 2^12312020 is an apocalyptic number.

12312020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12312020 is an abundant number, since it is smaller than the sum of its proper divisors (17237164).

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

12312020 is a wasteful number, since it uses less digits than its factorization.

12312020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87959 (or 87957 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 12312020 is about 3508.8488140699. The cubic root of 12312020 is about 230.9101929091.

Adding to 12312020 its reverse (2021321), we get a palindrome (14333341).

The spelling of 12312020 in words is "twelve million, three hundred twelve thousand, twenty".