20020350312 has 128 divisors (see below), whose sum is σ = 60427776000. Its totient is φ = 6118234560.

The previous prime is 20020350277. The next prime is 20020350319. The reversal of 20020350312 is 21305302002.

20020350312 is a `hidden beast` number, since 2 + 0 + 0 + 2 + 0 + 350 + 312 = 666.

It is a super-3 number, since 3×20020350312³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20020350319) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48543 + ... + 205905.

It is an arithmetic number, because the mean of its divisors is an integer number (472092000).

Almost surely, 2^20020350312 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 20020350312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30213888000).

20020350312 is an abundant number, since it is smaller than the sum of its proper divisors (40407425688).

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

20020350312 is a wasteful number, since it uses less digits than its factorization.

20020350312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157428 (or 157418 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

Adding to 20020350312 its reverse (21305302002), we get a palindrome (41325652314).

The spelling of 20020350312 in words is "twenty billion, twenty million, three hundred fifty thousand, three hundred twelve".