431398 has 8 divisors (see below), whose sum is σ = 705960. Its totient is φ = 196080.

The previous prime is 431381. The next prime is 431399. The reversal of 431398 is 893134.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×431398² = 372208468808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9783 + ... + 9826.

It is an arithmetic number, because the mean of its divisors is an integer number (88245).

2⁴³¹³⁹⁸ is an apocalyptic number.

431398 is a deficient number, since it is larger than the sum of its proper divisors (274562).

431398 is a wasteful number, since it uses less digits than its factorization.

431398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19622.

The product of its digits is 2592, while the sum is 28.

The square root of 431398 is about 656.8089524359. The cubic root of 431398 is about 75.5601322039.

It can be divided in two parts, 43 and 1398, that added together give a palindrome (1441).

The spelling of 431398 in words is "four hundred thirty-one thousand, three hundred ninety-eight".