681232039 has 2 divisors, whose sum is σ = 681232040. Its totient is φ = 681232038.

The previous prime is 681232031. The next prime is 681232043. The reversal of 681232039 is 930232186.

It is a happy number.

681232039 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 681232039 - 2³ = 681232031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 681231995 and 681232013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (681232031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 340616019 + 340616020.

It is an arithmetic number, because the mean of its divisors is an integer number (340616020).

Almost surely, 2^681232039 is an apocalyptic number.

681232039 is a deficient number, since it is larger than the sum of its proper divisors (1).

681232039 is an equidigital number, since it uses as much as digits as its factorization.

681232039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 681232039 is about 26100.4221996503. The cubic root of 681232039 is about 879.8966988763.

The spelling of 681232039 in words is "six hundred eighty-one million, two hundred thirty-two thousand, thirty-nine".