123331642344 has 24 divisors (see below), whose sum is σ = 334023198210. Its totient is φ = 41110547424.

The previous prime is 123331642339. The next prime is 123331642361. The reversal of 123331642344 is 443246133321.

It is a happy number.

123331642344 is a `hidden beast` number, since 1 + 2 + 3 + 3 + 3 + 1 + 642 + 3 + 4 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 123314750244 + 16892100 = 351162^2 + 4110^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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 junction number, because it is equal to n+sod(n) for n = 123331642299 and 123331642308.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 856469667 + ... + 856469810.

Almost surely, 2^123331642344 is an apocalyptic number.

It is an amenable number.

123331642344 is an abundant number, since it is smaller than the sum of its proper divisors (210691555866).

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

123331642344 is a wasteful number, since it uses less digits than its factorization.

123331642344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1712939489 (or 1712939482 counting only the distinct ones).

The product of its digits is 124416, while the sum is 36.

Adding to 123331642344 its reverse (443246133321), we get a palindrome (566577775665).

The spelling of 123331642344 in words is "one hundred twenty-three billion, three hundred thirty-one million, six hundred forty-two thousand, three hundred forty-four".