11199880031 has 2 divisors, whose sum is σ = 11199880032. Its totient is φ = 11199880030.

The previous prime is 11199880009. The next prime is 11199880073. The reversal of 11199880031 is 13008899111.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11199880031 is a prime.

It is a super-2 number, since 2×11199880031² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11199880631) 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, 5599940015 + 5599940016.

It is an arithmetic number, because the mean of its divisors is an integer number (5599940016).

Almost surely, 2^11199880031 is an apocalyptic number.

11199880031 is a deficient number, since it is larger than the sum of its proper divisors (1).

11199880031 is an equidigital number, since it uses as much as digits as its factorization.

11199880031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 41.

The spelling of 11199880031 in words is "eleven billion, one hundred ninety-nine million, eight hundred eighty thousand, thirty-one".