339812381 has 2 divisors, whose sum is σ = 339812382. Its totient is φ = 339812380.

The previous prime is 339812353. The next prime is 339812393. The reversal of 339812381 is 183218933.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 339812356 + 25 = 18434^2 + 5^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-339812381 is a prime.

It is a super-2 number, since 2×339812381² = 230944908561778322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (339812311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169906190 + 169906191.

It is an arithmetic number, because the mean of its divisors is an integer number (169906191).

Almost surely, 2^339812381 is an apocalyptic number.

It is an amenable number.

339812381 is a deficient number, since it is larger than the sum of its proper divisors (1).

339812381 is an equidigital number, since it uses as much as digits as its factorization.

339812381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 38.

The square root of 339812381 is about 18434.0006780948. Note that the first 3 decimals coincide. The cubic root of 339812381 is about 697.8247994198.

The spelling of 339812381 in words is "three hundred thirty-nine million, eight hundred twelve thousand, three hundred eighty-one".