20311022663 has 8 divisors (see below), whose sum is σ = 21637729008. Its totient is φ = 18998976384.

The previous prime is 20311022657. The next prime is 20311022701. The reversal of 20311022663 is 36622011302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20311022663 - 2¹⁰ = 20311021639 is a prime.

It is a super-2 number, since 2×20311022663² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311022603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3662156 + ... + 3667697.

It is an arithmetic number, because the mean of its divisors is an integer number (2704716126).

Almost surely, 2^20311022663 is an apocalyptic number.

20311022663 is a deficient number, since it is larger than the sum of its proper divisors (1326706345).

20311022663 is a wasteful number, since it uses less digits than its factorization.

20311022663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7330033.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 20311022663 its reverse (36622011302), we get a palindrome (56933033965).

The spelling of 20311022663 in words is "twenty billion, three hundred eleven million, twenty-two thousand, six hundred sixty-three".