1320752723 has 2 divisors, whose sum is σ = 1320752724. Its totient is φ = 1320752722.

The previous prime is 1320752717. The next prime is 1320752749. The reversal of 1320752723 is 3272570231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1320752723 - 2¹⁸ = 1320490579 is a prime.

It is a super-3 number, since 3×1320752723³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1320752723.

It is not a weakly prime, because it can be changed into another prime (1320752773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660376361 + 660376362.

It is an arithmetic number, because the mean of its divisors is an integer number (660376362).

Almost surely, 2^1320752723 is an apocalyptic number.

1320752723 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320752723 is an equidigital number, since it uses as much as digits as its factorization.

1320752723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 1320752723 is about 36342.1617821505. The cubic root of 1320752723 is about 1097.1697829881.

The spelling of 1320752723 in words is "one billion, three hundred twenty million, seven hundred fifty-two thousand, seven hundred twenty-three".