11100031001 has 4 divisors (see below), whose sum is σ = 11123800272. Its totient is φ = 11076261732.

The previous prime is 11100030971. The next prime is 11100031069. The reversal of 11100031001 is 10013000111.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11100031001 is a prime.

It is a super-2 number, since 2×11100031001² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11100031001.

It is not an unprimeable number, because it can be changed into a prime (11100031301) 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, 11883935 + ... + 11884868.

It is an arithmetic number, because the mean of its divisors is an integer number (2780950068).

Almost surely, 2^11100031001 is an apocalyptic number.

It is an amenable number.

11100031001 is a deficient number, since it is larger than the sum of its proper divisors (23769271).

11100031001 is an equidigital number, since it uses as much as digits as its factorization.

11100031001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23769270.

The product of its (nonzero) digits is 3, while the sum is 8.

Adding to 11100031001 its reverse (10013000111), we get a palindrome (21113031112).

The spelling of 11100031001 in words is "eleven billion, one hundred million, thirty-one thousand, one".