20201311312 has 160 divisors (see below), whose sum is σ = 48800876544. Its totient is φ = 7888320000.

The previous prime is 20201311297. The next prime is 20201311321. The reversal of 20201311312 is 21311310202.

It is a super-2 number, since 2×20201311312² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61030987 + ... + 61031317.

Almost surely, 2^20201311312 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 20201311312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24400438272).

20201311312 is an abundant number, since it is smaller than the sum of its proper divisors (28599565232).

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

20201311312 is a wasteful number, since it uses less digits than its factorization.

20201311312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777 (or 771 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20201311312 its reverse (21311310202), we get a palindrome (41512621514).

The spelling of 20201311312 in words is "twenty billion, two hundred one million, three hundred eleven thousand, three hundred twelve".