11253205531 has 4 divisors (see below), whose sum is σ = 11254127112. Its totient is φ = 11252283952.

The previous prime is 11253205477. The next prime is 11253205541. The reversal of 11253205531 is 13550235211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13550235211 = 167 ⋅81139133.

It is a cyclic number.

It is not a de Polignac number, because 11253205531 - 2¹¹ = 11253203483 is a prime.

It is a super-2 number, since 2×11253205531² (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 11253205531.

It is not an unprimeable number, because it can be changed into a prime (11253205541) 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, 442225 + ... + 466978.

It is an arithmetic number, because the mean of its divisors is an integer number (2813531778).

Almost surely, 2^11253205531 is an apocalyptic number.

11253205531 is a deficient number, since it is larger than the sum of its proper divisors (921581).

11253205531 is an equidigital number, since it uses as much as digits as its factorization.

11253205531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921580.

The product of its (nonzero) digits is 4500, while the sum is 28.

The spelling of 11253205531 in words is "eleven billion, two hundred fifty-three million, two hundred five thousand, five hundred thirty-one".