730001731 has 2 divisors, whose sum is σ = 730001732. Its totient is φ = 730001730.

The previous prime is 730001719. The next prime is 730001771. The reversal of 730001731 is 137100037.

It is a weak prime.

It is an emirp because it is prime and its reverse (137100037) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 730001731 - 2⁹ = 730001219 is a prime.

It is a super-2 number, since 2×730001731² = 1065805054525992722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (730001771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365000865 + 365000866.

It is an arithmetic number, because the mean of its divisors is an integer number (365000866).

Almost surely, 2^730001731 is an apocalyptic number.

730001731 is a deficient number, since it is larger than the sum of its proper divisors (1).

730001731 is an equidigital number, since it uses as much as digits as its factorization.

730001731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 441, while the sum is 22.

The square root of 730001731 is about 27018.5442057858. The cubic root of 730001731 is about 900.4120463038.

Adding to 730001731 its reverse (137100037), we get a palindrome (867101768).

The spelling of 730001731 in words is "seven hundred thirty million, one thousand, seven hundred thirty-one".