123444001131 has 16 divisors (see below), whose sum is σ = 179562821760. Its totient is φ = 74811249920.

The previous prime is 123444001117. The next prime is 123444001139. The reversal of 123444001131 is 131100444321.

It is not a de Polignac number, because 123444001131 - 2⁵ = 123444001099 is a prime.

It is a super-2 number, since 2×123444001131² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123444001139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 828091 + ... + 965723.

It is an arithmetic number, because the mean of its divisors is an integer number (11222676360).

Almost surely, 2^123444001131 is an apocalyptic number.

123444001131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123444001131 is a deficient number, since it is larger than the sum of its proper divisors (56118820629).

123444001131 is a wasteful number, since it uses less digits than its factorization.

123444001131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164826.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 123444001131 its reverse (131100444321), we get a palindrome (254544445452).

The spelling of 123444001131 in words is "one hundred twenty-three billion, four hundred forty-four million, one thousand, one hundred thirty-one".