431772563 has 4 divisors (see below), whose sum is σ = 432531960. Its totient is φ = 431013168.

The previous prime is 431772559. The next prime is 431772569. The reversal of 431772563 is 365277134.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 365277134 = 2 ⋅182638567.

It is a cyclic number.

It is not a de Polignac number, because 431772563 - 2² = 431772559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431772569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378845 + ... + 379982.

It is an arithmetic number, because the mean of its divisors is an integer number (108132990).

Almost surely, 2^431772563 is an apocalyptic number.

431772563 is a deficient number, since it is larger than the sum of its proper divisors (759397).

431772563 is an equidigital number, since it uses as much as digits as its factorization.

431772563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759396.

The product of its digits is 105840, while the sum is 38.

The square root of 431772563 is about 20779.1376866318. The cubic root of 431772563 is about 755.8199433785.

The spelling of 431772563 in words is "four hundred thirty-one million, seven hundred seventy-two thousand, five hundred sixty-three".