11001311001 has 16 divisors (see below), whose sum is σ = 16301108800. Its totient is φ = 7332915744.

The previous prime is 11001310961. The next prime is 11001311029. The reversal of 11001311001 is 10011310011.

It is not a de Polignac number, because 11001311001 - 2¹⁷ = 11001179929 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11001311081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135090 + ... + 200628.

It is an arithmetic number, because the mean of its divisors is an integer number (1018819300).

Almost surely, 2^11001311001 is an apocalyptic number.

It is an amenable number.

11001311001 is a deficient number, since it is larger than the sum of its proper divisors (5299797799).

11001311001 is an equidigital number, since it uses as much as digits as its factorization.

11001311001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71765 (or 71759 counting only the distinct ones).

The product of its (nonzero) digits is 3, while the sum is 9.

Adding to 11001311001 its reverse (10011310011), we get a palindrome (21012621012).

The spelling of 11001311001 in words is "eleven billion, one million, three hundred eleven thousand, one".