431340344221 has 8 divisors (see below), whose sum is σ = 434408708864. Its totient is φ = 428274766800.

The previous prime is 431340344219. The next prime is 431340344261. The reversal of 431340344221 is 122443043134.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 431340344221 - 2¹ = 431340344219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431340344261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385701 + ... + 1005706.

It is an arithmetic number, because the mean of its divisors is an integer number (54301088608).

Almost surely, 2^431340344221 is an apocalyptic number.

It is an amenable number.

431340344221 is a deficient number, since it is larger than the sum of its proper divisors (3068364643).

431340344221 is a wasteful number, since it uses less digits than its factorization.

431340344221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393611.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 431340344221 its reverse (122443043134), we get a palindrome (553783387355).

The spelling of 431340344221 in words is "four hundred thirty-one billion, three hundred forty million, three hundred forty-four thousand, two hundred twenty-one".