431020345 has 32 divisors (see below), whose sum is σ = 618554880. Its totient is φ = 281909760.

The previous prime is 431020321. The next prime is 431020349. The reversal of 431020345 is 543020134.

It is not a de Polignac number, because 431020345 - 2⁷ = 431020217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (431020349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 457575 + ... + 458515.

It is an arithmetic number, because the mean of its divisors is an integer number (19329840).

Almost surely, 2^431020345 is an apocalyptic number.

It is an amenable number.

431020345 is a deficient number, since it is larger than the sum of its proper divisors (187534535).

431020345 is a wasteful number, since it uses less digits than its factorization.

431020345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1545.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 431020345 is about 20761.0294783279. The cubic root of 431020345 is about 755.3807678352.

Adding to 431020345 its reverse (543020134), we get a palindrome (974040479).

The spelling of 431020345 in words is "four hundred thirty-one million, twenty thousand, three hundred forty-five".