431541321 has 4 divisors (see below), whose sum is σ = 575388432. Its totient is φ = 287694212.

The previous prime is 431541283. The next prime is 431541329. The reversal of 431541321 is 123145134.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 431541321 - 2¹⁰ = 431540297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 431541291 and 431541300.

It is not an unprimeable number, because it can be changed into a prime (431541329) 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, 71923551 + ... + 71923556.

It is an arithmetic number, because the mean of its divisors is an integer number (143847108).

Almost surely, 2^431541321 is an apocalyptic number.

It is an amenable number.

431541321 is a deficient number, since it is larger than the sum of its proper divisors (143847111).

431541321 is a wasteful number, since it uses less digits than its factorization.

431541321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143847110.

The product of its digits is 1440, while the sum is 24.

The square root of 431541321 is about 20773.5726585486. The cubic root of 431541321 is about 755.6849892066.

Adding to 431541321 its reverse (123145134), we get a palindrome (554686455).

The spelling of 431541321 in words is "four hundred thirty-one million, five hundred forty-one thousand, three hundred twenty-one".