731626243 has 2 divisors, whose sum is σ = 731626244. Its totient is φ = 731626242.

The previous prime is 731626241. The next prime is 731626249. The reversal of 731626243 is 342626137.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 731626243 - 2¹ = 731626241 is a prime.

Together with 731626241, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 731626199 and 731626208.

It is not a weakly prime, because it can be changed into another prime (731626241) 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, 365813121 + 365813122.

It is an arithmetic number, because the mean of its divisors is an integer number (365813122).

Almost surely, 2^731626243 is an apocalyptic number.

731626243 is a deficient number, since it is larger than the sum of its proper divisors (1).

731626243 is an equidigital number, since it uses as much as digits as its factorization.

731626243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 34.

The square root of 731626243 is about 27048.5904068955. The cubic root of 731626243 is about 901.0794632066.

The spelling of 731626243 in words is "seven hundred thirty-one million, six hundred twenty-six thousand, two hundred forty-three".