283385381 has 2 divisors, whose sum is σ = 283385382. Its totient is φ = 283385380.

The previous prime is 283385371. The next prime is 283385383. The reversal of 283385381 is 183583382.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 268632100 + 14753281 = 16390^2 + 3841^2 .

It is a cyclic number.

It is not a de Polignac number, because 283385381 - 2¹⁴ = 283368997 is a prime.

It is a super-2 number, since 2×283385381² = 160614548329030322, which contains 22 as substring.

Together with 283385383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (283385383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141692690 + 141692691.

It is an arithmetic number, because the mean of its divisors is an integer number (141692691).

Almost surely, 2^283385381 is an apocalyptic number.

It is an amenable number.

283385381 is a deficient number, since it is larger than the sum of its proper divisors (1).

283385381 is an equidigital number, since it uses as much as digits as its factorization.

283385381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 41.

The square root of 283385381 is about 16834.0542056868. The cubic root of 283385381 is about 656.8393271086.

The spelling of 283385381 in words is "two hundred eighty-three million, three hundred eighty-five thousand, three hundred eighty-one".