98431 has 4 divisors (see below), whose sum is σ = 99072. Its totient is φ = 97792.

The previous prime is 98429. The next prime is 98443. The reversal of 98431 is 13489.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 98431 - 2¹ = 98429 is a prime.

It is a super-2 number, since 2×98431² = 19377323522, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a zygodrome in base 2 and base 5.

It is a junction number, because it is equal to n+sod(n) for n = 98396 and 98405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98411) 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, 66 + ... + 448.

It is an arithmetic number, because the mean of its divisors is an integer number (24768).

2⁹⁸⁴³¹ is an apocalyptic number.

98431 is a deficient number, since it is larger than the sum of its proper divisors (641).

98431 is a wasteful number, since it uses less digits than its factorization.

98431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640.

The product of its digits is 864, while the sum is 25.

The square root of 98431 is about 313.7371511313. The cubic root of 98431 is about 46.1718524471.

It can be divided in two parts, 98 and 431, that added together give a square (529 = 23²).

The spelling of 98431 in words is "ninety-eight thousand, four hundred thirty-one".