123318381771 has 32 divisors (see below), whose sum is σ = 196773272640. Its totient is φ = 75878208000.

The previous prime is 123318381761. The next prime is 123318381841. The reversal of 123318381771 is 177183813321.

It is not a de Polignac number, because 123318381771 - 2¹⁰ = 123318380747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123318381721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3323421 + ... + 3360321.

It is an arithmetic number, because the mean of its divisors is an integer number (6149164770).

Almost surely, 2^123318381771 is an apocalyptic number.

123318381771 is a deficient number, since it is larger than the sum of its proper divisors (73454890869).

123318381771 is a wasteful number, since it uses less digits than its factorization.

123318381771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46444 (or 46438 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The spelling of 123318381771 in words is "one hundred twenty-three billion, three hundred eighteen million, three hundred eighty-one thousand, seven hundred seventy-one".