123231312301987 has 2 divisors, whose sum is σ = 123231312301988. Its totient is φ = 123231312301986.

The previous prime is 123231312301921. The next prime is 123231312302023. The reversal of 123231312301987 is 789103213132321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123231312301987 - 2³¹ = 123229164818339 is a prime.

It is a super-3 number, since 3×123231312301987³ (a number of 43 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (123231312301087) 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, 61615656150993 + 61615656150994.

It is an arithmetic number, because the mean of its divisors is an integer number (61615656150994).

Almost surely, 2^{123231312301987} is an apocalyptic number.

123231312301987 is a deficient number, since it is larger than the sum of its proper divisors (1).

123231312301987 is an equidigital number, since it uses as much as digits as its factorization.

123231312301987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 123231312301987 in words is "one hundred twenty-three trillion, two hundred thirty-one billion, three hundred twelve million, three hundred one thousand, nine hundred eighty-seven".