123317242278 has 16 divisors (see below), whose sum is σ = 247040808960. Its totient is φ = 41038026696.

The previous prime is 123317242231. The next prime is 123317242283. The reversal of 123317242278 is 872242713321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16926238 + ... + 16933521.

It is an arithmetic number, because the mean of its divisors is an integer number (15440050560).

Almost surely, 2^123317242278 is an apocalyptic number.

123317242278 is an abundant number, since it is smaller than the sum of its proper divisors (123723566682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123317242278 is a wasteful number, since it uses less digits than its factorization.

123317242278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33860371.

The product of its digits is 225792, while the sum is 42.

Adding to 123317242278 its reverse (872242713321), we get a palindrome (995559955599).

The spelling of 123317242278 in words is "one hundred twenty-three billion, three hundred seventeen million, two hundred forty-two thousand, two hundred seventy-eight".