431339497 has 4 divisors (see below), whose sum is σ = 431455300. Its totient is φ = 431223696.

The previous prime is 431339473. The next prime is 431339509. The reversal of 431339497 is 794933134.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 206669376 + 224670121 = 14376^2 + 14989^2 .

It is a cyclic number.

It is not a de Polignac number, because 431339497 - 2²³ = 422950889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431339437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52122 + ... + 59827.

It is an arithmetic number, because the mean of its divisors is an integer number (107863825).

Almost surely, 2^431339497 is an apocalyptic number.

It is an amenable number.

431339497 is a deficient number, since it is larger than the sum of its proper divisors (115803).

431339497 is a wasteful number, since it uses less digits than its factorization.

431339497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115802.

The product of its digits is 244944, while the sum is 43.

The square root of 431339497 is about 20768.7143800477. The cubic root of 431339497 is about 755.5671641439.

The spelling of 431339497 in words is "four hundred thirty-one million, three hundred thirty-nine thousand, four hundred ninety-seven".