431340233 has 2 divisors, whose sum is σ = 431340234. Its totient is φ = 431340232.

The previous prime is 431340199. The next prime is 431340257. The reversal of 431340233 is 332043134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 428200249 + 3139984 = 20693^2 + 1772^2 .

It is a cyclic number.

It is not a de Polignac number, because 431340233 - 2⁸ = 431339977 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 431340199 and 431340208.

It is not a weakly prime, because it can be changed into another prime (431340263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215670116 + 215670117.

It is an arithmetic number, because the mean of its divisors is an integer number (215670117).

Almost surely, 2^431340233 is an apocalyptic number.

It is an amenable number.

431340233 is a deficient number, since it is larger than the sum of its proper divisors (1).

431340233 is an equidigital number, since it uses as much as digits as its factorization.

431340233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 431340233 is about 20768.7320989992. The cubic root of 431340233 is about 755.5675938882.

Adding to 431340233 its reverse (332043134), we get a palindrome (763383367).

The spelling of 431340233 in words is "four hundred thirty-one million, three hundred forty thousand, two hundred thirty-three".