123398248181 has 12 divisors (see below), whose sum is σ = 137930935680. Its totient is φ = 110231681040.

The previous prime is 123398248157. The next prime is 123398248187. The reversal of 123398248181 is 181842893321.

It is a de Polignac number, because none of the positive numbers 2^k-123398248181 is a prime.

It is a super-2 number, since 2×123398248181² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123398248187) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11771651 + ... + 11782128.

It is an arithmetic number, because the mean of its divisors is an integer number (11494244640).

Almost surely, 2^123398248181 is an apocalyptic number.

It is an amenable number.

123398248181 is a deficient number, since it is larger than the sum of its proper divisors (14532687499).

123398248181 is a wasteful number, since it uses less digits than its factorization.

123398248181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23553836 (or 23553823 counting only the distinct ones).

The product of its digits is 663552, while the sum is 50.

The spelling of 123398248181 in words is "one hundred twenty-three billion, three hundred ninety-eight million, two hundred forty-eight thousand, one hundred eighty-one".