1232381539 has 2 divisors, whose sum is σ = 1232381540. Its totient is φ = 1232381538.

The previous prime is 1232381531. The next prime is 1232381551. The reversal of 1232381539 is 9351832321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1232381539 - 2³ = 1232381531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1232381498 and 1232381507.

It is not a weakly prime, because it can be changed into another prime (1232381531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616190769 + 616190770.

It is an arithmetic number, because the mean of its divisors is an integer number (616190770).

Almost surely, 2^1232381539 is an apocalyptic number.

1232381539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232381539 is an equidigital number, since it uses as much as digits as its factorization.

1232381539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 37.

The square root of 1232381539 is about 35105.2921793851. The cubic root of 1232381539 is about 1072.1323358362.

The spelling of 1232381539 in words is "one billion, two hundred thirty-two million, three hundred eighty-one thousand, five hundred thirty-nine".