123231996 has 48 divisors (see below), whose sum is σ = 325533600. Its totient is φ = 40300416.

The previous prime is 123231973. The next prime is 123232027. The reversal of 123231996 is 699132321.

It is a happy number.

It is a super-2 number, since 2×123231996² = 30372249676288032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 123231996.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5041 + ... + 16488.

It is an arithmetic number, because the mean of its divisors is an integer number (6781950).

Almost surely, 2^123231996 is an apocalyptic number.

It is an amenable number.

123231996 is an abundant number, since it is smaller than the sum of its proper divisors (202301604).

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

123231996 is a wasteful number, since it uses less digits than its factorization.

123231996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21595 (or 21587 counting only the distinct ones).

The product of its digits is 17496, while the sum is 36.

The square root of 123231996 is about 11100.9907665938. The cubic root of 123231996 is about 497.6314590778.

The spelling of 123231996 in words is "one hundred twenty-three million, two hundred thirty-one thousand, nine hundred ninety-six".