12020310 has 24 divisors (see below), whose sum is σ = 31253040. Its totient is φ = 3205392.

The previous prime is 12020299. The next prime is 12020311. The reversal of 12020310 is 1302021.

It is a happy number.

It is a super-2 number, since 2×12020310² = 288975704992200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 12020292 and 12020301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020311) 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, 66690 + ... + 66869.

It is an arithmetic number, because the mean of its divisors is an integer number (1302210).

Almost surely, 2^12020310 is an apocalyptic number.

12020310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12020310 is an abundant number, since it is smaller than the sum of its proper divisors (19232730).

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

12020310 is a wasteful number, since it uses less digits than its factorization.

12020310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133572 (or 133569 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 12020310 is about 3467.0318717889. The cubic root of 12020310 is about 229.0719376340.

Adding to 12020310 its reverse (1302021), we get a palindrome (13322331).

The spelling of 12020310 in words is "twelve million, twenty thousand, three hundred ten".