20202312 has 64 divisors (see below), whose sum is σ = 55198080. Its totient is φ = 6124032.

The previous prime is 20202311. The next prime is 20202313. The reversal of 20202312 is 21320202.

It is an interprime number because it is at equal distance from previous prime (20202311) and next prime (20202313).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (20202311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22333 + ... + 23219.

It is an arithmetic number, because the mean of its divisors is an integer number (862470).

Almost surely, 2^20202312 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 20202312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27599040).

20202312 is an abundant number, since it is smaller than the sum of its proper divisors (34995768).

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

20202312 is a wasteful number, since it uses less digits than its factorization.

20202312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982 (or 978 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 20202312 is about 4494.6982101138. The cubic root of 20202312 is about 272.3539581620.

Adding to 20202312 its reverse (21320202), we get a palindrome (41522514).

The spelling of 20202312 in words is "twenty million, two hundred two thousand, three hundred twelve".