338256811 has 2 divisors, whose sum is σ = 338256812. Its totient is φ = 338256810.

The previous prime is 338256781. The next prime is 338256823. The reversal of 338256811 is 118652833.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-338256811 is a prime.

It is a super-2 number, since 2×338256811² = 228835340375779442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (338256011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169128405 + 169128406.

It is an arithmetic number, because the mean of its divisors is an integer number (169128406).

Almost surely, 2^338256811 is an apocalyptic number.

338256811 is a deficient number, since it is larger than the sum of its proper divisors (1).

338256811 is an equidigital number, since it uses as much as digits as its factorization.

338256811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 37.

The square root of 338256811 is about 18391.7593231317. The cubic root of 338256811 is about 696.7583521596.

The spelling of 338256811 in words is "three hundred thirty-eight million, two hundred fifty-six thousand, eight hundred eleven".