20020312 has 32 divisors (see below), whose sum is σ = 40708080. Its totient is φ = 9175680.

The previous prime is 20020307. The next prime is 20020331. The reversal of 20020312 is 21302002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16362 + ... + 17542.

Almost surely, 2^20020312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20020312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20354040).

20020312 is an abundant number, since it is smaller than the sum of its proper divisors (20687768).

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

20020312 is a wasteful number, since it uses less digits than its factorization.

20020312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363 (or 1359 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 20020312 is about 4474.4063293358. The cubic root of 20020312 is about 271.5336226529.

Adding to 20020312 its reverse (21302002), we get a palindrome (41322314).

The spelling of 20020312 in words is "twenty million, twenty thousand, three hundred twelve".