236875381 has 2 divisors, whose sum is σ = 236875382. Its totient is φ = 236875380.

The previous prime is 236875357. The next prime is 236875403. The reversal of 236875381 is 183578632.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226984356 + 9891025 = 15066^2 + 3145^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-236875381 is a prime.

It is a super-2 number, since 2×236875381² = 112219892247790322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (236872381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 118437690 + 118437691.

It is an arithmetic number, because the mean of its divisors is an integer number (118437691).

Almost surely, 2^236875381 is an apocalyptic number.

It is an amenable number.

236875381 is a deficient number, since it is larger than the sum of its proper divisors (1).

236875381 is an equidigital number, since it uses as much as digits as its factorization.

236875381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 43.

The square root of 236875381 is about 15390.7563491857. The cubic root of 236875381 is about 618.7377902430.

The spelling of 236875381 in words is "two hundred thirty-six million, eight hundred seventy-five thousand, three hundred eighty-one".