431240113 has 2 divisors, whose sum is σ = 431240114. Its totient is φ = 431240112.

The previous prime is 431240111. The next prime is 431240129. The reversal of 431240113 is 311042134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 427331584 + 3908529 = 20672^2 + 1977^2 .

It is a cyclic number.

It is not a de Polignac number, because 431240113 - 2¹ = 431240111 is a prime.

Together with 431240111, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (431240111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215620056 + 215620057.

It is an arithmetic number, because the mean of its divisors is an integer number (215620057).

Almost surely, 2^431240113 is an apocalyptic number.

It is an amenable number.

431240113 is a deficient number, since it is larger than the sum of its proper divisors (1).

431240113 is an equidigital number, since it uses as much as digits as its factorization.

431240113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 431240113 is about 20766.3216049449. The cubic root of 431240113 is about 755.5091301548.

Adding to 431240113 its reverse (311042134), we get a palindrome (742282247).

The spelling of 431240113 in words is "four hundred thirty-one million, two hundred forty thousand, one hundred thirteen".