120243031 has 2 divisors, whose sum is σ = 120243032. Its totient is φ = 120243030.

The previous prime is 120243029. The next prime is 120243107. The reversal of 120243031 is 130342021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120243031 - 2¹ = 120243029 is a prime.

It is a super-2 number, since 2×120243031² = 28916773008133922, which contains 22 as substring.

Together with 120243029, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 120242996 and 120243014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120243731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60121515 + 60121516.

It is an arithmetic number, because the mean of its divisors is an integer number (60121516).

Almost surely, 2^120243031 is an apocalyptic number.

120243031 is a deficient number, since it is larger than the sum of its proper divisors (1).

120243031 is an equidigital number, since it uses as much as digits as its factorization.

120243031 is an odious number, because the sum of its binary digits is odd.

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

The square root of 120243031 is about 10965.5383360782. The cubic root of 120243031 is about 493.5751714314.

Adding to 120243031 its reverse (130342021), we get a palindrome (250585052).

The spelling of 120243031 in words is "one hundred twenty million, two hundred forty-three thousand, thirty-one".