947431 has 2 divisors, whose sum is σ = 947432. Its totient is φ = 947430.

The previous prime is 947423. The next prime is 947449. The reversal of 947431 is 134749.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 947431 - 2³ = 947423 is a prime.

It is a super-2 number, since 2×947431² = 1795250999522, which contains 22 as substring.

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 947431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (947411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 473715 + 473716.

It is an arithmetic number, because the mean of its divisors is an integer number (473716).

2⁹⁴⁷⁴³¹ is an apocalyptic number.

947431 is a deficient number, since it is larger than the sum of its proper divisors (1).

947431 is an equidigital number, since it uses as much as digits as its factorization.

947431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 28.

The square root of 947431 is about 973.3606731320. The cubic root of 947431 is about 98.2160650004.

It can be divided in two parts, 947 and 431, that added together give a triangular number (1378 = T₅₂).

The spelling of 947431 in words is "nine hundred forty-seven thousand, four hundred thirty-one".