11201204531 has 16 divisors (see below), whose sum is σ = 12332688480. Its totient is φ = 10088997120.

The previous prime is 11201204489. The next prime is 11201204533. The reversal of 11201204531 is 13540210211.

11201204531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11201204531 - 2⁶ = 11201204467 is a prime.

It is a super-2 number, since 2×11201204531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11201204533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 547535 + ... + 567623.

It is an arithmetic number, because the mean of its divisors is an integer number (770793030).

Almost surely, 2^11201204531 is an apocalyptic number.

11201204531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11201204531 is a deficient number, since it is larger than the sum of its proper divisors (1131483949).

11201204531 is a wasteful number, since it uses less digits than its factorization.

11201204531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20566.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 11201204531 its reverse (13540210211), we get a palindrome (24741414742).

The spelling of 11201204531 in words is "eleven billion, two hundred one million, two hundred four thousand, five hundred thirty-one".