123161696 has 72 divisors (see below), whose sum is σ = 284119920. Its totient is φ = 52553088.

The previous prime is 123161681. The next prime is 123161699. The reversal of 123161696 is 696161321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123161699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 537710 + ... + 537938.

It is an arithmetic number, because the mean of its divisors is an integer number (3946110).

Almost surely, 2^123161696 is an apocalyptic number.

123161696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123161696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142059960).

123161696 is an abundant number, since it is smaller than the sum of its proper divisors (160958224).

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

123161696 is an frugal number, since it uses more digits than its factorization.

123161696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274 (or 238 counting only the distinct ones).

The product of its digits is 11664, while the sum is 35.

The square root of 123161696 is about 11097.8239308434. The cubic root of 123161696 is about 497.5368133495.

The spelling of 123161696 in words is "one hundred twenty-three million, one hundred sixty-one thousand, six hundred ninety-six".