431242345 has 8 divisors (see below), whose sum is σ = 517704264. Its totient is φ = 344851584.

The previous prime is 431242321. The next prime is 431242391. The reversal of 431242345 is 543242134.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 286015744 + 145226601 = 16912^2 + 12051^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 431242345 - 2²³ = 422853737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3394 + ... + 29563.

It is an arithmetic number, because the mean of its divisors is an integer number (64713033).

Almost surely, 2^431242345 is an apocalyptic number.

It is an amenable number.

431242345 is a deficient number, since it is larger than the sum of its proper divisors (86461919).

431242345 is a wasteful number, since it uses less digits than its factorization.

431242345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35579.

The product of its digits is 11520, while the sum is 28.

The square root of 431242345 is about 20766.3753457362. The cubic root of 431242345 is about 755.5104335999.

Adding to 431242345 its reverse (543242134), we get a palindrome (974484479).

The spelling of 431242345 in words is "four hundred thirty-one million, two hundred forty-two thousand, three hundred forty-five".