232864381 has 2 divisors, whose sum is σ = 232864382. Its totient is φ = 232864380.

The previous prime is 232864339. The next prime is 232864391. The reversal of 232864381 is 183468232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141967225 + 90897156 = 11915^2 + 9534^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-232864381 is a prime.

It is a super-2 number, since 2×232864381² = 108451639877026322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 232864381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232864391) 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, 116432190 + 116432191.

It is an arithmetic number, because the mean of its divisors is an integer number (116432191).

Almost surely, 2^232864381 is an apocalyptic number.

It is an amenable number.

232864381 is a deficient number, since it is larger than the sum of its proper divisors (1).

232864381 is an equidigital number, since it uses as much as digits as its factorization.

232864381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 37.

The square root of 232864381 is about 15259.8945278137. The cubic root of 232864381 is about 615.2255378310.

The spelling of 232864381 in words is "two hundred thirty-two million, eight hundred sixty-four thousand, three hundred eighty-one".