431121343 has 16 divisors (see below), whose sum is σ = 488406240. Its totient is φ = 378086400.

The previous prime is 431121331. The next prime is 431121347. The reversal of 431121343 is 343121134.

It is a cyclic number.

It is not a de Polignac number, because 431121343 - 2²¹ = 429024191 is a prime.

It is a super-2 number, since 2×431121343² = 371731224780247298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431121347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8763 + ... + 30643.

It is an arithmetic number, because the mean of its divisors is an integer number (30525390).

Almost surely, 2^431121343 is an apocalyptic number.

431121343 is a deficient number, since it is larger than the sum of its proper divisors (57284897).

431121343 is a wasteful number, since it uses less digits than its factorization.

431121343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21978.

The product of its digits is 864, while the sum is 22.

The square root of 431121343 is about 20763.4617296827. The cubic root of 431121343 is about 755.4397642681.

Adding to 431121343 its reverse (343121134), we get a palindrome (774242477).

The spelling of 431121343 in words is "four hundred thirty-one million, one hundred twenty-one thousand, three hundred forty-three".