11203491361 has 4 divisors (see below), whose sum is σ = 11232292500. Its totient is φ = 11174690224.

The previous prime is 11203491353. The next prime is 11203491407. The reversal of 11203491361 is 16319430211.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1635717136 + 9567774225 = 40444^2 + 97815^2 .

It is a cyclic number.

It is not a de Polignac number, because 11203491361 - 2³ = 11203491353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11203491301) 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, 14399986 + ... + 14400763.

It is an arithmetic number, because the mean of its divisors is an integer number (2808073125).

Almost surely, 2^11203491361 is an apocalyptic number.

It is an amenable number.

11203491361 is a deficient number, since it is larger than the sum of its proper divisors (28801139).

11203491361 is an equidigital number, since it uses as much as digits as its factorization.

11203491361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28801138.

The product of its (nonzero) digits is 3888, while the sum is 31.

The spelling of 11203491361 in words is "eleven billion, two hundred three million, four hundred ninety-one thousand, three hundred sixty-one".