24431028121 has 2 divisors, whose sum is σ = 24431028122. Its totient is φ = 24431028120.

The previous prime is 24431028107. The next prime is 24431028131. The reversal of 24431028121 is 12182013442.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20198094400 + 4232933721 = 142120^2 + 65061^2 .

It is a cyclic number.

It is not a de Polignac number, because 24431028121 - 2¹³ = 24431019929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 24431028121.

It is not a weakly prime, because it can be changed into another prime (24431028131) 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 as a sum of consecutive naturals, namely, 12215514060 + 12215514061.

It is an arithmetic number, because the mean of its divisors is an integer number (12215514061).

Almost surely, 2^24431028121 is an apocalyptic number.

It is an amenable number.

24431028121 is a deficient number, since it is larger than the sum of its proper divisors (1).

24431028121 is an equidigital number, since it uses as much as digits as its factorization.

24431028121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3072, while the sum is 28.

The spelling of 24431028121 in words is "twenty-four billion, four hundred thirty-one million, twenty-eight thousand, one hundred twenty-one".