11255431219 has 2 divisors, whose sum is σ = 11255431220. Its totient is φ = 11255431218.

The previous prime is 11255431217. The next prime is 11255431241. The reversal of 11255431219 is 91213455211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11255431219 - 2¹ = 11255431217 is a prime.

It is a super-2 number, since 2×11255431219² (a number of 21 digits) contains 22 as substring.

Together with 11255431217, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11255431217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5627715609 + 5627715610.

It is an arithmetic number, because the mean of its divisors is an integer number (5627715610).

Almost surely, 2^11255431219 is an apocalyptic number.

11255431219 is a deficient number, since it is larger than the sum of its proper divisors (1).

11255431219 is an equidigital number, since it uses as much as digits as its factorization.

11255431219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 34.

The spelling of 11255431219 in words is "eleven billion, two hundred fifty-five million, four hundred thirty-one thousand, two hundred nineteen".