11311051 has 2 divisors, whose sum is σ = 11311052. Its totient is φ = 11311050.

The previous prime is 11311049. The next prime is 11311087. The reversal of 11311051 is 15011311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11311051 - 2¹ = 11311049 is a prime.

Together with 11311049, it forms a pair of twin primes.

It is a nialpdrome in base 15.

It is not a weakly prime, because it can be changed into another prime (11311031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5655525 + 5655526.

It is an arithmetic number, because the mean of its divisors is an integer number (5655526).

Almost surely, 2^11311051 is an apocalyptic number.

11311051 is a deficient number, since it is larger than the sum of its proper divisors (1).

11311051 is an equidigital number, since it uses as much as digits as its factorization.

11311051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15, while the sum is 13.

The square root of 11311051 is about 3363.1905982266. The cubic root of 11311051 is about 224.4748311326.

Adding to 11311051 its reverse (15011311), we get a palindrome (26322362).

The spelling of 11311051 in words is "eleven million, three hundred eleven thousand, fifty-one".