11057117531 has 2 divisors, whose sum is σ = 11057117532. Its totient is φ = 11057117530.

The previous prime is 11057117521. The next prime is 11057117557. The reversal of 11057117531 is 13571175011.

11057117531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11057117531 is a prime.

It is a super-2 number, since 2×11057117531² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11057117501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5528558765 + 5528558766.

It is an arithmetic number, because the mean of its divisors is an integer number (5528558766).

Almost surely, 2^11057117531 is an apocalyptic number.

11057117531 is a deficient number, since it is larger than the sum of its proper divisors (1).

11057117531 is an equidigital number, since it uses as much as digits as its factorization.

11057117531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3675, while the sum is 32.

The spelling of 11057117531 in words is "eleven billion, fifty-seven million, one hundred seventeen thousand, five hundred thirty-one".