11097201131 has 4 divisors (see below), whose sum is σ = 11121169632. Its totient is φ = 11073232632.

The previous prime is 11097201127. The next prime is 11097201133. The reversal of 11097201131 is 13110279011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11097201131 - 2² = 11097201127 is a prime.

It is a super-2 number, since 2×11097201131² (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 11097201131.

It is not an unprimeable number, because it can be changed into a prime (11097201133) 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, 11983556 + ... + 11984481.

It is an arithmetic number, because the mean of its divisors is an integer number (2780292408).

Almost surely, 2^11097201131 is an apocalyptic number.

11097201131 is a deficient number, since it is larger than the sum of its proper divisors (23968501).

11097201131 is an equidigital number, since it uses as much as digits as its factorization.

11097201131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23968500.

The product of its (nonzero) digits is 378, while the sum is 26.

The spelling of 11097201131 in words is "eleven billion, ninety-seven million, two hundred one thousand, one hundred thirty-one".