431231113 has 2 divisors, whose sum is σ = 431231114. Its totient is φ = 431231112.

The previous prime is 431231093. The next prime is 431231123. The reversal of 431231113 is 311132134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 425885769 + 5345344 = 20637^2 + 2312^2 .

It is a cyclic number.

It is not a de Polignac number, because 431231113 - 2⁵ = 431231081 is a prime.

It is not a weakly prime, because it can be changed into another prime (431231123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215615556 + 215615557.

It is an arithmetic number, because the mean of its divisors is an integer number (215615557).

Almost surely, 2^431231113 is an apocalyptic number.

It is an amenable number.

431231113 is a deficient number, since it is larger than the sum of its proper divisors (1).

431231113 is an equidigital number, since it uses as much as digits as its factorization.

431231113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 19.

The square root of 431231113 is about 20766.1049067946. The cubic root of 431231113 is about 755.5038742820.

Adding to 431231113 its reverse (311132134), we get a palindrome (742363247).

The spelling of 431231113 in words is "four hundred thirty-one million, two hundred thirty-one thousand, one hundred thirteen".