381236333 has 2 divisors, whose sum is σ = 381236334. Its totient is φ = 381236332.

The previous prime is 381236267. The next prime is 381236341. The reversal of 381236333 is 333632183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 381147529 + 88804 = 19523^2 + 298^2 .

It is an emirp because it is prime and its reverse (333632183) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 381236333 - 2⁸ = 381236077 is a prime.

It is a super-2 number, since 2×381236333² = 290682283198573778, which contains 22 as substring.

It is a Chen prime.

It is equal to p_20388065 and since 381236333 and 20388065 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 381236333.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381236363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190618166 + 190618167.

It is an arithmetic number, because the mean of its divisors is an integer number (190618167).

Almost surely, 2^381236333 is an apocalyptic number.

It is an amenable number.

381236333 is a deficient number, since it is larger than the sum of its proper divisors (1).

381236333 is an equidigital number, since it uses as much as digits as its factorization.

381236333 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 32.

The square root of 381236333 is about 19525.2742106225. The cubic root of 381236333 is about 725.1003162021.

The spelling of 381236333 in words is "three hundred eighty-one million, two hundred thirty-six thousand, three hundred thirty-three".