431009023 has 4 divisors (see below), whose sum is σ = 431059240. Its totient is φ = 430958808.

The previous prime is 431009021. The next prime is 431009063. The reversal of 431009023 is 320900134.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 431009023 - 2¹ = 431009021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 431008985 and 431009003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431009021) 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, 8628 + ... + 30601.

It is an arithmetic number, because the mean of its divisors is an integer number (107764810).

Almost surely, 2^431009023 is an apocalyptic number.

431009023 is a deficient number, since it is larger than the sum of its proper divisors (50217).

431009023 is a wasteful number, since it uses less digits than its factorization.

431009023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50216.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 431009023 is about 20760.7568021977. The cubic root of 431009023 is about 755.3741536880.

Adding to 431009023 its reverse (320900134), we get a palindrome (751909157).

The spelling of 431009023 in words is "four hundred thirty-one million, nine thousand, twenty-three".