431346643 has 12 divisors (see below), whose sum is σ = 533806608. Its totient is φ = 341284320.

The previous prime is 431346583. The next prime is 431346647. The reversal of 431346643 is 346643134.

It is a de Polignac number, because none of the positive numbers 2^k-431346643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 431346599 and 431346608.

It is not an unprimeable number, because it can be changed into a prime (431346647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 181128 + ... + 183493.

It is an arithmetic number, because the mean of its divisors is an integer number (44483884).

Almost surely, 2^431346643 is an apocalyptic number.

431346643 is a deficient number, since it is larger than the sum of its proper divisors (102459965).

431346643 is a wasteful number, since it uses less digits than its factorization.

431346643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364654 (or 364641 counting only the distinct ones).

The product of its digits is 62208, while the sum is 34.

The square root of 431346643 is about 20768.8864169459. The cubic root of 431346643 is about 755.5713366137.

Adding to 431346643 its reverse (346643134), we get a palindrome (777989777).

The spelling of 431346643 in words is "four hundred thirty-one million, three hundred forty-six thousand, six hundred forty-three".