12431504121 has 16 divisors (see below), whose sum is σ = 17193164736. Its totient is φ = 7984037376.

The previous prime is 12431504087. The next prime is 12431504123. The reversal of 12431504121 is 12140513421.

It is not a de Polignac number, because 12431504121 - 2¹¹ = 12431502073 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12431504091 and 12431504100.

It is not an unprimeable number, because it can be changed into a prime (12431504123) 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, 650640 + ... + 669473.

It is an arithmetic number, because the mean of its divisors is an integer number (1074572796).

Almost surely, 2^12431504121 is an apocalyptic number.

It is an amenable number.

12431504121 is a deficient number, since it is larger than the sum of its proper divisors (4761660615).

12431504121 is a wasteful number, since it uses less digits than its factorization.

12431504121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320232.

The product of its (nonzero) digits is 960, while the sum is 24.

The spelling of 12431504121 in words is "twelve billion, four hundred thirty-one million, five hundred four thousand, one hundred twenty-one".