123144012331 has 8 divisors (see below), whose sum is σ = 123430850928. Its totient is φ = 122857260000.

The previous prime is 123144012319. The next prime is 123144012379. The reversal of 123144012331 is 133210441321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123144012331 is a prime.

It is a super-2 number, since 2×123144012331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123144012296 and 123144012305.

It is not an unprimeable number, because it can be changed into a prime (123144012301) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3495756 + ... + 3530806.

It is an arithmetic number, because the mean of its divisors is an integer number (15428856366).

Almost surely, 2^123144012331 is an apocalyptic number.

123144012331 is a deficient number, since it is larger than the sum of its proper divisors (286838597).

123144012331 is an equidigital number, since it uses as much as digits as its factorization.

123144012331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43133.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 123144012331 its reverse (133210441321), we get a palindrome (256354453652).

The spelling of 123144012331 in words is "one hundred twenty-three billion, one hundred forty-four million, twelve thousand, three hundred thirty-one".