11011100002531 has 2 divisors, whose sum is σ = 11011100002532. Its totient is φ = 11011100002530.

The previous prime is 11011100002499. The next prime is 11011100002543. The reversal of 11011100002531 is 13520000111011.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11011100002531 - 2⁵ = 11011100002499 is a prime.

It is a super-2 number, since 2×11011100002531² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11011100002561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505550001265 + 5505550001266.

It is an arithmetic number, because the mean of its divisors is an integer number (5505550001266).

Almost surely, 2^{11011100002531} is an apocalyptic number.

11011100002531 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011100002531 is an equidigital number, since it uses as much as digits as its factorization.

11011100002531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30, while the sum is 16.

Adding to 11011100002531 its reverse (13520000111011), we get a palindrome (24531100113542).

The spelling of 11011100002531 in words is "eleven trillion, eleven billion, one hundred million, two thousand, five hundred thirty-one".