20311011376 has 20 divisors (see below), whose sum is σ = 39635701000. Its totient is φ = 10082443392.

The previous prime is 20311011317. The next prime is 20311011377. The reversal of 20311011376 is 67311011302.

It is a self number, because there is not a number n which added to its sum of digits gives 20311011376.

It is not an unprimeable number, because it can be changed into a prime (20311011377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4564101 + ... + 4568548.

It is an arithmetic number, because the mean of its divisors is an integer number (1981785050).

Almost surely, 2^20311011376 is an apocalyptic number.

It is an amenable number.

20311011376 is a deficient number, since it is larger than the sum of its proper divisors (19324689624).

20311011376 is a wasteful number, since it uses less digits than its factorization.

20311011376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9132796 (or 9132790 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 25.

Adding to 20311011376 its reverse (67311011302), we get a palindrome (87622022678).

The spelling of 20311011376 in words is "twenty billion, three hundred eleven million, eleven thousand, three hundred seventy-six".