111311241103987 has 2 divisors, whose sum is σ = 111311241103988. Its totient is φ = 111311241103986.

The previous prime is 111311241103961. The next prime is 111311241104057. The reversal of 111311241103987 is 789301142113111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111311241103987 - 2⁷ = 111311241103859 is a prime.

It is a super-2 number, since 2×111311241103987² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111311241103687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55655620551993 + 55655620551994.

It is an arithmetic number, because the mean of its divisors is an integer number (55655620551994).

Almost surely, 2^{111311241103987} is an apocalyptic number.

111311241103987 is a deficient number, since it is larger than the sum of its proper divisors (1).

111311241103987 is an equidigital number, since it uses as much as digits as its factorization.

111311241103987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 43.

The spelling of 111311241103987 in words is "one hundred eleven trillion, three hundred eleven billion, two hundred forty-one million, one hundred three thousand, nine hundred eighty-seven".