431423945 has 8 divisors (see below), whose sum is σ = 529748736. Its totient is φ = 337112496.

The previous prime is 431423933. The next prime is 431423947. The reversal of 431423945 is 549324134.

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 431423945 - 2¹⁰ = 431422921 is a prime.

It is a super-2 number, since 2×431423945² = 372253240638726050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431423947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1003097 + ... + 1003526.

It is an arithmetic number, because the mean of its divisors is an integer number (66218592).

Almost surely, 2^431423945 is an apocalyptic number.

It is an amenable number.

431423945 is a deficient number, since it is larger than the sum of its proper divisors (98324791).

431423945 is a wasteful number, since it uses less digits than its factorization.

431423945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006671.

The product of its digits is 51840, while the sum is 35.

The square root of 431423945 is about 20770.7473385047. The cubic root of 431423945 is about 755.6164694457.

The spelling of 431423945 in words is "four hundred thirty-one million, four hundred twenty-three thousand, nine hundred forty-five".