11231031019987 has 2 divisors, whose sum is σ = 11231031019988. Its totient is φ = 11231031019986.

The previous prime is 11231031019921. The next prime is 11231031020009. The reversal of 11231031019987 is 78991013013211.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11231031019987 - 2³⁹ = 10681275206099 is a prime.

It is a super-2 number, since 2×11231031019987² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11231731019987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5615515509993 + 5615515509994.

It is an arithmetic number, because the mean of its divisors is an integer number (5615515509994).

Almost surely, 2^{11231031019987} is an apocalyptic number.

11231031019987 is a deficient number, since it is larger than the sum of its proper divisors (1).

11231031019987 is an equidigital number, since it uses as much as digits as its factorization.

11231031019987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 46.

The spelling of 11231031019987 in words is "eleven trillion, two hundred thirty-one billion, thirty-one million, nineteen thousand, nine hundred eighty-seven".