123832381 has 2 divisors, whose sum is σ = 123832382. Its totient is φ = 123832380.

The previous prime is 123832343. The next prime is 123832399. The reversal of 123832381 is 183238321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123409881 + 422500 = 11109^2 + 650^2 .

It is a cyclic number.

It is not a de Polignac number, because 123832381 - 2¹³ = 123824189 is a prime.

It is a super-2 number, since 2×123832381² = 30668917168258322, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123830381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61916190 + 61916191.

It is an arithmetic number, because the mean of its divisors is an integer number (61916191).

Almost surely, 2^123832381 is an apocalyptic number.

It is an amenable number.

123832381 is a deficient number, since it is larger than the sum of its proper divisors (1).

123832381 is an equidigital number, since it uses as much as digits as its factorization.

123832381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 31.

The square root of 123832381 is about 11127.9998652049. Note that the first 3 decimals coincide. The cubic root of 123832381 is about 498.4383019435.

The spelling of 123832381 in words is "one hundred twenty-three million, eight hundred thirty-two thousand, three hundred eighty-one".