11201125431 has 4 divisors (see below), whose sum is σ = 14934833912. Its totient is φ = 7467416952.

The previous prime is 11201125391. The next prime is 11201125447. The reversal of 11201125431 is 13452110211.

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

It is not a de Polignac number, because 11201125431 - 2¹¹ = 11201123383 is a prime.

It is a super-2 number, since 2×11201125431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11201125398 and 11201125407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11201125031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1866854236 + ... + 1866854241.

It is an arithmetic number, because the mean of its divisors is an integer number (3733708478).

Almost surely, 2^11201125431 is an apocalyptic number.

11201125431 is a deficient number, since it is larger than the sum of its proper divisors (3733708481).

11201125431 is an equidigital number, since it uses as much as digits as its factorization.

11201125431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3733708480.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 11201125431 its reverse (13452110211), we get a palindrome (24653235642).

The spelling of 11201125431 in words is "eleven billion, two hundred one million, one hundred twenty-five thousand, four hundred thirty-one".