123284707987 has 8 divisors (see below), whose sum is σ = 142349354336. Its totient is φ = 104583197952.

The previous prime is 123284707951. The next prime is 123284708009. The reversal of 123284707987 is 789707482321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123284707987 - 2¹⁹ = 123284183699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123284707907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90783348 + ... + 90784705.

It is an arithmetic number, because the mean of its divisors is an integer number (17793669292).

Almost surely, 2^123284707987 is an apocalyptic number.

123284707987 is a deficient number, since it is larger than the sum of its proper divisors (19064646349).

123284707987 is an equidigital number, since it uses as much as digits as its factorization.

123284707987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181568157.

The product of its (nonzero) digits is 9483264, while the sum is 58.

The spelling of 123284707987 in words is "one hundred twenty-three billion, two hundred eighty-four million, seven hundred seven thousand, nine hundred eighty-seven".