123403201398 has 12 divisors (see below), whose sum is σ = 267373603068. Its totient is φ = 41134400460.

The previous prime is 123403201393. The next prime is 123403201417. The reversal of 123403201398 is 893102304321.

123403201398 is a `hidden beast` number, since 1 + 23 + 40 + 3 + 201 + 398 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123403201391) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3427866688 + ... + 3427866723.

It is an arithmetic number, because the mean of its divisors is an integer number (22281133589).

Almost surely, 2^123403201398 is an apocalyptic number.

123403201398 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

123403201398 is an abundant number, since it is smaller than the sum of its proper divisors (143970401670).

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

123403201398 is a wasteful number, since it uses less digits than its factorization.

123403201398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6855733419 (or 6855733416 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 123403201398 in words is "one hundred twenty-three billion, four hundred three million, two hundred one thousand, three hundred ninety-eight".