83431 has 2 divisors, whose sum is σ = 83432. Its totient is φ = 83430.

The previous prime is 83423. The next prime is 83437. The reversal of 83431 is 13438.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83431 - 2³ = 83423 is a prime.

It is a super-2 number, since 2×83431² = 13921463522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 83399 and 83408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41715 + 41716.

It is an arithmetic number, because the mean of its divisors is an integer number (41716).

2⁸³⁴³¹ is an apocalyptic number.

83431 is a deficient number, since it is larger than the sum of its proper divisors (1).

83431 is an equidigital number, since it uses as much as digits as its factorization.

83431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 19.

The square root of 83431 is about 288.8442486878. The cubic root of 83431 is about 43.6960805133.

Adding to 83431 its reverse (13438), we get a palindrome (96869).

The spelling of 83431 in words is "eighty-three thousand, four hundred thirty-one".