20311162732 has 48 divisors (see below), whose sum is σ = 41145172992.
Its totient is φ = 8592917760.
The previous prime is 20311162727. The next prime is 20311162771. The reversal of 20311162732 is 23726111302.
It is a Harshad number since it is a multiple of its sum of digits (28).
It is a self number, because there is not a number n which added to its sum of digits gives 20311162732.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3676132 + ... + 3681652.
It is an arithmetic number, because the mean of its divisors is an integer number (857191104).
Almost surely, 220311162732 is an apocalyptic number.
It is an amenable number.
20311162732 is an abundant number, since it is smaller than the sum of its proper divisors (20834010260).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
20311162732 is a wasteful number, since it uses less digits than its factorization.
20311162732 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7198 (or 7196 counting only the distinct ones).
The product of its (nonzero) digits is 3024, while the sum is 28.
The spelling of 20311162732 in words is "twenty billion, three hundred eleven million, one hundred sixty-two thousand, seven hundred thirty-two".