1124432381 has 2 divisors, whose sum is σ = 1124432382. Its totient is φ = 1124432380.

The previous prime is 1124432321. The next prime is 1124432383. The reversal of 1124432381 is 1832344211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1013467225 + 110965156 = 31835^2 + 10534^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1124432381 is a prime.

It is a super-2 number, since 2×1124432381² = 2528696358882658322, which contains 22 as substring.

Together with 1124432383, 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 (1124432383) 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, 562216190 + 562216191.

It is an arithmetic number, because the mean of its divisors is an integer number (562216191).

Almost surely, 2^1124432381 is an apocalyptic number.

It is an amenable number.

1124432381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1124432381 is an equidigital number, since it uses as much as digits as its factorization.

1124432381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 29.

The square root of 1124432381 is about 33532.5570304443. The cubic root of 1124432381 is about 1039.8669643069.

Adding to 1124432381 its reverse (1832344211), we get a palindrome (2956776592).

The spelling of 1124432381 in words is "one billion, one hundred twenty-four million, four hundred thirty-two thousand, three hundred eighty-one".