11201120431 has 4 divisors (see below), whose sum is σ = 11201380632. Its totient is φ = 11200860232.

The previous prime is 11201120321. The next prime is 11201120443. The reversal of 11201120431 is 13402110211.

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 11201120431 - 2²⁷ = 11066902703 is a prime.

It is a super-2 number, since 2×11201120431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201120471) 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, 48445 + ... + 157318.

It is an arithmetic number, because the mean of its divisors is an integer number (2800345158).

Almost surely, 2^11201120431 is an apocalyptic number.

11201120431 is a deficient number, since it is larger than the sum of its proper divisors (260201).

11201120431 is an equidigital number, since it uses as much as digits as its factorization.

11201120431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260200.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11201120431 its reverse (13402110211), we get a palindrome (24603230642).

The spelling of 11201120431 in words is "eleven billion, two hundred one million, one hundred twenty thousand, four hundred thirty-one".