11225431513 has 4 divisors (see below), whose sum is σ = 11225738880. Its totient is φ = 11225124148.

The previous prime is 11225431457. The next prime is 11225431531. The reversal of 11225431513 is 31513452211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11225431513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11225431573) 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, 90145 + ... + 174862.

It is an arithmetic number, because the mean of its divisors is an integer number (2806434720).

Almost surely, 2^11225431513 is an apocalyptic number.

It is an amenable number.

11225431513 is a deficient number, since it is larger than the sum of its proper divisors (307367).

11225431513 is an equidigital number, since it uses as much as digits as its factorization.

11225431513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307366.

The product of its digits is 3600, while the sum is 28.

Adding to 11225431513 its reverse (31513452211), we get a palindrome (42738883724).

The spelling of 11225431513 in words is "eleven billion, two hundred twenty-five million, four hundred thirty-one thousand, five hundred thirteen".