431136947 has 2 divisors, whose sum is σ = 431136948. Its totient is φ = 431136946.

The previous prime is 431136931. The next prime is 431136973. The reversal of 431136947 is 749631134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 431136947 - 2⁴ = 431136931 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 431136947.

It is not a weakly prime, because it can be changed into another prime (431136347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215568473 + 215568474.

It is an arithmetic number, because the mean of its divisors is an integer number (215568474).

Almost surely, 2^431136947 is an apocalyptic number.

431136947 is a deficient number, since it is larger than the sum of its proper divisors (1).

431136947 is an equidigital number, since it uses as much as digits as its factorization.

431136947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 38.

The square root of 431136947 is about 20763.8374825079. The cubic root of 431136947 is about 755.4488782836.

The spelling of 431136947 in words is "four hundred thirty-one million, one hundred thirty-six thousand, nine hundred forty-seven".