120319261 has 2 divisors, whose sum is σ = 120319262. Its totient is φ = 120319260.

The previous prime is 120319259. The next prime is 120319273. The reversal of 120319261 is 162913021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115562500 + 4756761 = 10750^2 + 2181^2 .

It is a cyclic number.

It is not a de Polignac number, because 120319261 - 2¹ = 120319259 is a prime.

It is a super-2 number, since 2×120319261² = 28953449135172242, which contains 22 as substring.

Together with 120319259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120319061) 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, 60159630 + 60159631.

It is an arithmetic number, because the mean of its divisors is an integer number (60159631).

Almost surely, 2^120319261 is an apocalyptic number.

It is an amenable number.

120319261 is a deficient number, since it is larger than the sum of its proper divisors (1).

120319261 is an equidigital number, since it uses as much as digits as its factorization.

120319261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 120319261 is about 10969.0136748935. The cubic root of 120319261 is about 493.6794526990.

The spelling of 120319261 in words is "one hundred twenty million, three hundred nineteen thousand, two hundred sixty-one".