431320894 has 4 divisors (see below), whose sum is σ = 646981344. Its totient is φ = 215660446.

The previous prime is 431320891. The next prime is 431320907. The reversal of 431320894 is 498023134.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431320891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107830222 + ... + 107830225.

It is an arithmetic number, because the mean of its divisors is an integer number (161745336).

Almost surely, 2^431320894 is an apocalyptic number.

431320894 is a deficient number, since it is larger than the sum of its proper divisors (215660450).

431320894 is a wasteful number, since it uses less digits than its factorization.

431320894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215660449.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 431320894 is about 20768.2665140835. The cubic root of 431320894 is about 755.5563018431.

The spelling of 431320894 in words is "four hundred thirty-one million, three hundred twenty thousand, eight hundred ninety-four".