11131113451 has 2 divisors, whose sum is σ = 11131113452. Its totient is φ = 11131113450.

The previous prime is 11131113449. The next prime is 11131113473. The reversal of 11131113451 is 15431113111.

It is an a-pointer prime, because the next prime (11131113473) can be obtained adding 11131113451 to its sum of digits (22).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11131113451 - 2¹ = 11131113449 is a prime.

Together with 11131113449, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11131113431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5565556725 + 5565556726.

It is an arithmetic number, because the mean of its divisors is an integer number (5565556726).

Almost surely, 2^11131113451 is an apocalyptic number.

11131113451 is a deficient number, since it is larger than the sum of its proper divisors (1).

11131113451 is an equidigital number, since it uses as much as digits as its factorization.

11131113451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 180, while the sum is 22.

Adding to 11131113451 its reverse (15431113111), we get a palindrome (26562226562).

The spelling of 11131113451 in words is "eleven billion, one hundred thirty-one million, one hundred thirteen thousand, four hundred fifty-one".