431444434 has 4 divisors (see below), whose sum is σ = 647166654. Its totient is φ = 215722216.

The previous prime is 431444393. The next prime is 431444441. The reversal of 431444434 is 434444134.

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

It can be written as a sum of positive squares in only one way, i.e., 313396209 + 118048225 = 17703^2 + 10865^2 .

It is a super-2 number, since 2×431444434² = 372288599259160712, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 431444396 and 431444405.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107861107 + ... + 107861110.

Almost surely, 2^431444434 is an apocalyptic number.

431444434 is a deficient number, since it is larger than the sum of its proper divisors (215722220).

431444434 is a wasteful number, since it uses less digits than its factorization.

431444434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215722219.

The product of its digits is 36864, while the sum is 31.

The square root of 431444434 is about 20771.2405503379. The cubic root of 431444434 is about 755.6284310602.

Adding to 431444434 its reverse (434444134), we get a palindrome (865888568).

The spelling of 431444434 in words is "four hundred thirty-one million, four hundred forty-four thousand, four hundred thirty-four".