338531 has 2 divisors, whose sum is σ = 338532. Its totient is φ = 338530.

The previous prime is 338497. The next prime is 338543. The reversal of 338531 is 135833.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 338531 - 2¹⁸ = 76387 is a prime.

It is a super-2 number, since 2×338531² = 229206475922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 338497 and 338506.

It is not a weakly prime, because it can be changed into another prime (338581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169265 + 169266.

It is an arithmetic number, because the mean of its divisors is an integer number (169266).

2³³⁸⁵³¹ is an apocalyptic number.

338531 is a deficient number, since it is larger than the sum of its proper divisors (1).

338531 is an equidigital number, since it uses as much as digits as its factorization.

338531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 23.

The square root of 338531 is about 581.8341688144. The cubic root of 338531 is about 69.6946564068.

The spelling of 338531 in words is "three hundred thirty-eight thousand, five hundred thirty-one".