120513823 has 2 divisors, whose sum is σ = 120513824. Its totient is φ = 120513822.

The previous prime is 120513797. The next prime is 120513829. The reversal of 120513823 is 328315021.

It is a strong prime.

It is an emirp because it is prime and its reverse (328315021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120513823 - 2⁵ = 120513791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120513829) 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, 60256911 + 60256912.

It is an arithmetic number, because the mean of its divisors is an integer number (60256912).

Almost surely, 2^120513823 is an apocalyptic number.

120513823 is a deficient number, since it is larger than the sum of its proper divisors (1).

120513823 is an equidigital number, since it uses as much as digits as its factorization.

120513823 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 120513823 is about 10977.8788023917. The cubic root of 120513823 is about 493.9454104910.

Adding to 120513823 its reverse (328315021), we get a palindrome (448828844).

The spelling of 120513823 in words is "one hundred twenty million, five hundred thirteen thousand, eight hundred twenty-three".