431411043221 has 4 divisors (see below), whose sum is σ = 434306419500. Its totient is φ = 428515666944.

The previous prime is 431411043209. The next prime is 431411043223. The reversal of 431411043221 is 122340114134.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 81847488100 + 349563555121 = 286090^2 + 591239^2 .

It is a cyclic number.

It is not a de Polignac number, because 431411043221 - 2⁶ = 431411043157 is a prime.

It is a super-2 number, since 2×431411043221² (a number of 24 digits) 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 (431411043223) 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, 1447687916 + ... + 1447688213.

It is an arithmetic number, because the mean of its divisors is an integer number (108576604875).

Almost surely, 2^431411043221 is an apocalyptic number.

It is an amenable number.

431411043221 is a deficient number, since it is larger than the sum of its proper divisors (2895376279).

431411043221 is a wasteful number, since it uses less digits than its factorization.

431411043221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2895376278.

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 431411043221 its reverse (122340114134), we get a palindrome (553751157355).

The spelling of 431411043221 in words is "four hundred thirty-one billion, four hundred eleven million, forty-three thousand, two hundred twenty-one".