431384 has 8 divisors (see below), whose sum is σ = 808860. Its totient is φ = 215688.

The previous prime is 431381. The next prime is 431399. The reversal of 431384 is 483134.

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26954 + ... + 26969.

2⁴³¹³⁸⁴ is an apocalyptic number.

It is an amenable number.

431384 is a deficient number, since it is larger than the sum of its proper divisors (377476).

431384 is a wasteful number, since it uses less digits than its factorization.

431384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53929 (or 53925 counting only the distinct ones).

The product of its digits is 1152, while the sum is 23.

The square root of 431384 is about 656.7982947603. The cubic root of 431384 is about 75.5593148200.

The spelling of 431384 in words is "four hundred thirty-one thousand, three hundred eighty-four".