20311100001 has 40 divisors (see below), whose sum is σ = 30845707200. Its totient is φ = 13316577120.

The previous prime is 20311099973. The next prime is 20311100021. The reversal of 20311100001 is 10000111302.

It is not a de Polignac number, because 20311100001 - 2⁶ = 20311099937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (20311100021) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2405455 + ... + 2413883.

It is an arithmetic number, because the mean of its divisors is an integer number (771142680).

Almost surely, 2^20311100001 is an apocalyptic number.

It is an amenable number.

20311100001 is a deficient number, since it is larger than the sum of its proper divisors (10534607199).

20311100001 is an equidigital number, since it uses as much as digits as its factorization.

20311100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8931 (or 8922 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 20311100001 its reverse (10000111302), we get a palindrome (30311211303).

The spelling of 20311100001 in words is "twenty billion, three hundred eleven million, one hundred thousand, one".