20013311001 has 4 divisors (see below), whose sum is σ = 26684414672. Its totient is φ = 13342207332.

The previous prime is 20013310981. The next prime is 20013311023. The reversal of 20013311001 is 10011331002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20013311001 - 2⁶ = 20013310937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20013311041) 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, 3335551831 + ... + 3335551836.

It is an arithmetic number, because the mean of its divisors is an integer number (6671103668).

Almost surely, 2^20013311001 is an apocalyptic number.

It is an amenable number.

20013311001 is a deficient number, since it is larger than the sum of its proper divisors (6671103671).

20013311001 is an equidigital number, since it uses as much as digits as its factorization.

20013311001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6671103670.

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 20013311001 its reverse (10011331002), we get a palindrome (30024642003).

The spelling of 20013311001 in words is "twenty billion, thirteen million, three hundred eleven thousand, one".