120511613 has 2 divisors, whose sum is σ = 120511614. Its totient is φ = 120511612.

The previous prime is 120511609. The next prime is 120511621. The reversal of 120511613 is 316115021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106048804 + 14462809 = 10298^2 + 3803^2 .

It is an emirp because it is prime and its reverse (316115021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120511613 - 2² = 120511609 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120511603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60255806 + 60255807.

It is an arithmetic number, because the mean of its divisors is an integer number (60255807).

Almost surely, 2^120511613 is an apocalyptic number.

It is an amenable number.

120511613 is a deficient number, since it is larger than the sum of its proper divisors (1).

120511613 is an equidigital number, since it uses as much as digits as its factorization.

120511613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 120511613 is about 10977.7781449618. The cubic root of 120511613 is about 493.9423911250.

Adding to 120511613 its reverse (316115021), we get a palindrome (436626634).

The spelling of 120511613 in words is "one hundred twenty million, five hundred eleven thousand, six hundred thirteen".