431400444443 has 4 divisors (see below), whose sum is σ = 433334975808. Its totient is φ = 429465913080.

The previous prime is 431400444383. The next prime is 431400444451. The reversal of 431400444443 is 344444004134.

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

It is a cyclic number.

It is not a de Polignac number, because 431400444443 - 2⁶ = 431400444379 is a prime.

It is a super-2 number, since 2×431400444443² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431400444463) 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, 967265348 + ... + 967265793.

It is an arithmetic number, because the mean of its divisors is an integer number (108333743952).

Almost surely, 2^431400444443 is an apocalyptic number.

431400444443 is a deficient number, since it is larger than the sum of its proper divisors (1934531365).

431400444443 is a wasteful number, since it uses less digits than its factorization.

431400444443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934531364.

The product of its (nonzero) digits is 147456, while the sum is 35.

Adding to 431400444443 its reverse (344444004134), we get a palindrome (775844448577).

The spelling of 431400444443 in words is "four hundred thirty-one billion, four hundred million, four hundred forty-four thousand, four hundred forty-three".