120323981 has 2 divisors, whose sum is σ = 120323982. Its totient is φ = 120323980.

The previous prime is 120323953. The next prime is 120324041. The reversal of 120323981 is 189323021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92813956 + 27510025 = 9634^2 + 5245^2 .

It is an emirp because it is prime and its reverse (189323021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120323981 - 2²² = 116129677 is a prime.

It is a super-2 number, since 2×120323981² = 28955720807376722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120323921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60161990 + 60161991.

It is an arithmetic number, because the mean of its divisors is an integer number (60161991).

Almost surely, 2^120323981 is an apocalyptic number.

It is an amenable number.

120323981 is a deficient number, since it is larger than the sum of its proper divisors (1).

120323981 is an equidigital number, since it uses as much as digits as its factorization.

120323981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 120323981 is about 10969.2288243067. The cubic root of 120323981 is about 493.6859081258.

The spelling of 120323981 in words is "one hundred twenty million, three hundred twenty-three thousand, nine hundred eighty-one".