431898 has 8 divisors (see below), whose sum is σ = 863808. Its totient is φ = 143964.

The previous prime is 431891. The next prime is 431903. The reversal of 431898 is 898134.

431898 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

431898 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (431891) by changing a digit.

431898 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35986 + ... + 35997.

It is an arithmetic number, because the mean of its divisors is an integer number (107976).

2⁴³¹⁸⁹⁸ is an apocalyptic number.

431898 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

431898 is a wasteful number, since it uses less digits than its factorization.

431898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71988.

The product of its digits is 6912, while the sum is 33.

The square root of 431898 is about 657.1894703965. The cubic root of 431898 is about 75.5893128982.

The spelling of 431898 in words is "four hundred thirty-one thousand, eight hundred ninety-eight".