431031434 has 4 divisors (see below), whose sum is σ = 646547154. Its totient is φ = 215515716.

The previous prime is 431031427. The next prime is 431031439. The reversal of 431031434 is 434130134.

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., 353327209 + 77704225 = 18797^2 + 8815^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (431031439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107757857 + ... + 107757860.

Almost surely, 2^431031434 is an apocalyptic number.

431031434 is a deficient number, since it is larger than the sum of its proper divisors (215515720).

431031434 is a wasteful number, since it uses less digits than its factorization.

431031434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215515719.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 431031434 is about 20761.2965394746. The cubic root of 431031434 is about 755.3872457548.

Adding to 431031434 its reverse (434130134), we get a palindrome (865161568).

The spelling of 431031434 in words is "four hundred thirty-one million, thirty-one thousand, four hundred thirty-four".