431134333321 has 4 divisors (see below), whose sum is σ = 446001034500. Its totient is φ = 416267632144.

The previous prime is 431134333313. The next prime is 431134333349. The reversal of 431134333321 is 123333431134.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123333431134 = 2 ⋅61666715567.

It can be written as a sum of positive squares in 2 ways, for example, as 340051093321 + 91083240000 = 583139^2 + 301800^2 .

It is a cyclic number.

It is not a de Polignac number, because 431134333321 - 2³ = 431134333313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431134333351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7433350546 + ... + 7433350603.

It is an arithmetic number, because the mean of its divisors is an integer number (111500258625).

Almost surely, 2^431134333321 is an apocalyptic number.

It is an amenable number.

431134333321 is a deficient number, since it is larger than the sum of its proper divisors (14866701179).

431134333321 is a wasteful number, since it uses less digits than its factorization.

431134333321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14866701178.

The product of its digits is 23328, while the sum is 31.

Adding to 431134333321 its reverse (123333431134), we get a palindrome (554467764455).

The spelling of 431134333321 in words is "four hundred thirty-one billion, one hundred thirty-four million, three hundred thirty-three thousand, three hundred twenty-one".