123231103987 has 2 divisors, whose sum is σ = 123231103988. Its totient is φ = 123231103986.

The previous prime is 123231103927. The next prime is 123231104111. The reversal of 123231103987 is 789301132321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123231103987 - 2¹⁵ = 123231071219 is a prime.

It is not a weakly prime, because it can be changed into another prime (123231103927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61615551993 + 61615551994.

It is an arithmetic number, because the mean of its divisors is an integer number (61615551994).

Almost surely, 2^123231103987 is an apocalyptic number.

123231103987 is a deficient number, since it is larger than the sum of its proper divisors (1).

123231103987 is an equidigital number, since it uses as much as digits as its factorization.

123231103987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The spelling of 123231103987 in words is "one hundred twenty-three billion, two hundred thirty-one million, one hundred three thousand, nine hundred eighty-seven".