431307634 has 4 divisors (see below), whose sum is σ = 646961454. Its totient is φ = 215653816.

The previous prime is 431307599. The next prime is 431307649. The reversal of 431307634 is 436703134.

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., 289102009 + 142205625 = 17003^2 + 11925^2 .

It is a junction number, because it is equal to n+sod(n) for n = 431307596 and 431307605.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107826907 + ... + 107826910.

Almost surely, 2^431307634 is an apocalyptic number.

431307634 is a deficient number, since it is larger than the sum of its proper divisors (215653820).

431307634 is a wasteful number, since it uses less digits than its factorization.

431307634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215653819.

The product of its (nonzero) digits is 18144, while the sum is 31.

The square root of 431307634 is about 20767.9472745864. The cubic root of 431307634 is about 755.5485591320.

The spelling of 431307634 in words is "four hundred thirty-one million, three hundred seven thousand, six hundred thirty-four".