120811913 has 2 divisors, whose sum is σ = 120811914. Its totient is φ = 120811912.

The previous prime is 120811841. The next prime is 120811973. The reversal of 120811913 is 319118021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119530489 + 1281424 = 10933^2 + 1132^2 .

It is a cyclic number.

It is not a de Polignac number, because 120811913 - 2¹⁶ = 120746377 is a prime.

It is not a weakly prime, because it can be changed into another prime (120811973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60405956 + 60405957.

It is an arithmetic number, because the mean of its divisors is an integer number (60405957).

Almost surely, 2^120811913 is an apocalyptic number.

It is an amenable number.

120811913 is a deficient number, since it is larger than the sum of its proper divisors (1).

120811913 is an equidigital number, since it uses as much as digits as its factorization.

120811913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 120811913 is about 10991.4472659427. The cubic root of 120811913 is about 494.3523318747.

Adding to 120811913 its reverse (319118021), we get a palindrome (439929934).

The spelling of 120811913 in words is "one hundred twenty million, eight hundred eleven thousand, nine hundred thirteen".