338285531 has 2 divisors, whose sum is σ = 338285532. Its totient is φ = 338285530.

The previous prime is 338285491. The next prime is 338285543. The reversal of 338285531 is 135582833.

It is a strong prime.

It is an emirp because it is prime and its reverse (135582833) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-338285531 is a prime.

It is a super-2 number, since 2×338285531² = 228874200967903922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (338285581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169142765 + 169142766.

It is an arithmetic number, because the mean of its divisors is an integer number (169142766).

Almost surely, 2^338285531 is an apocalyptic number.

338285531 is a deficient number, since it is larger than the sum of its proper divisors (1).

338285531 is an equidigital number, since it uses as much as digits as its factorization.

338285531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86400, while the sum is 38.

The square root of 338285531 is about 18392.5400910260. The cubic root of 338285531 is about 696.7780712339.

The spelling of 338285531 in words is "three hundred thirty-eight million, two hundred eighty-five thousand, five hundred thirty-one".