123331289085 has 48 divisors (see below), whose sum is σ = 215143568640. Its totient is φ = 65355960960.

The previous prime is 123331289041. The next prime is 123331289089. The reversal of 123331289085 is 580982133321.

It is not a de Polignac number, because 123331289085 - 2⁷ = 123331288957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 123331289085.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123331289089) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11118412 + ... + 11129498.

It is an arithmetic number, because the mean of its divisors is an integer number (4482157680).

Almost surely, 2^123331289085 is an apocalyptic number.

123331289085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123331289085 is a deficient number, since it is larger than the sum of its proper divisors (91812279555).

123331289085 is a wasteful number, since it uses less digits than its factorization.

123331289085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12658 (or 12655 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 123331289085 in words is "one hundred twenty-three billion, three hundred thirty-one million, two hundred eighty-nine thousand, eighty-five".