731230069 has 2 divisors, whose sum is σ = 731230070. Its totient is φ = 731230068.

The previous prime is 731230037. The next prime is 731230081. The reversal of 731230069 is 960032137.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 602702500 + 128527569 = 24550^2 + 11337^2 .

It is an emirp because it is prime and its reverse (960032137) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 731230069 - 2⁵ = 731230037 is a prime.

It is a super-2 number, since 2×731230069² = 1069394827619489522, 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 731230069.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (731234069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365615034 + 365615035.

It is an arithmetic number, because the mean of its divisors is an integer number (365615035).

Almost surely, 2^731230069 is an apocalyptic number.

It is an amenable number.

731230069 is a deficient number, since it is larger than the sum of its proper divisors (1).

731230069 is an equidigital number, since it uses as much as digits as its factorization.

731230069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 731230069 is about 27041.2660391484. The cubic root of 731230069 is about 900.9167896587.

The spelling of 731230069 in words is "seven hundred thirty-one million, two hundred thirty thousand, sixty-nine".