120313309 has 2 divisors, whose sum is σ = 120313310. Its totient is φ = 120313308.

The previous prime is 120313283. The next prime is 120313337. The reversal of 120313309 is 903313021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71453209 + 48860100 = 8453^2 + 6990^2 .

It is a cyclic number.

It is not a de Polignac number, because 120313309 - 2⁷ = 120313181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120313309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120313379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60156654 + 60156655.

It is an arithmetic number, because the mean of its divisors is an integer number (60156655).

Almost surely, 2^120313309 is an apocalyptic number.

It is an amenable number.

120313309 is a deficient number, since it is larger than the sum of its proper divisors (1).

120313309 is an equidigital number, since it uses as much as digits as its factorization.

120313309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 22.

The square root of 120313309 is about 10968.7423618207. The cubic root of 120313309 is about 493.6713120557.

The spelling of 120313309 in words is "one hundred twenty million, three hundred thirteen thousand, three hundred nine".