120031243 has 2 divisors, whose sum is σ = 120031244. Its totient is φ = 120031242.

The previous prime is 120031229. The next prime is 120031267. The reversal of 120031243 is 342130021.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (342130021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120031243 - 2⁵ = 120031211 is a prime.

It is a super-2 number, since 2×120031243² = 28814998592250098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (120031213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60015621 + 60015622.

It is an arithmetic number, because the mean of its divisors is an integer number (60015622).

Almost surely, 2^120031243 is an apocalyptic number.

120031243 is a deficient number, since it is larger than the sum of its proper divisors (1).

120031243 is an equidigital number, since it uses as much as digits as its factorization.

120031243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 120031243 is about 10955.8770986170. The cubic root of 120031243 is about 493.2852177426.

Adding to 120031243 its reverse (342130021), we get a palindrome (462161264).

The spelling of 120031243 in words is "one hundred twenty million, thirty-one thousand, two hundred forty-three".