431042347 has 2 divisors, whose sum is σ = 431042348. Its totient is φ = 431042346.

The previous prime is 431042317. The next prime is 431042357. The reversal of 431042347 is 743240134.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431042347 is a prime.

It is not a weakly prime, because it can be changed into another prime (431042317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215521173 + 215521174.

It is an arithmetic number, because the mean of its divisors is an integer number (215521174).

Almost surely, 2^431042347 is an apocalyptic number.

431042347 is a deficient number, since it is larger than the sum of its proper divisors (1).

431042347 is an equidigital number, since it uses as much as digits as its factorization.

431042347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 431042347 is about 20761.5593585838. The cubic root of 431042347 is about 755.3936207512.

It can be divided in two parts, 43104 and 2347, that added together give a triangular number (45451 = T₃₀₁).

The spelling of 431042347 in words is "four hundred thirty-one million, forty-two thousand, three hundred forty-seven".