123240041431 has 16 divisors (see below), whose sum is σ = 133314158880. Its totient is φ = 113251248000.

The previous prime is 123240041423. The next prime is 123240041437. The reversal of 123240041431 is 134140042321.

It is a cyclic number.

It is not a de Polignac number, because 123240041431 - 2³ = 123240041423 is a prime.

It is a super-2 number, since 2×123240041431² (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 = 123240041396 and 123240041405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123240041437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7604485 + ... + 7620673.

It is an arithmetic number, because the mean of its divisors is an integer number (8332134930).

Almost surely, 2^123240041431 is an apocalyptic number.

123240041431 is a deficient number, since it is larger than the sum of its proper divisors (10074117449).

123240041431 is a wasteful number, since it uses less digits than its factorization.

123240041431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18786.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 123240041431 its reverse (134140042321), we get a palindrome (257380083752).

The spelling of 123240041431 in words is "one hundred twenty-three billion, two hundred forty million, forty-one thousand, four hundred thirty-one".