120310111243 has 4 divisors (see below), whose sum is σ = 137497270000. Its totient is φ = 103122952488.

The previous prime is 120310111219. The next prime is 120310111249. The reversal of 120310111243 is 342111013021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342111013021 = 7001 ⋅48866021.

It is a cyclic number.

It is not a de Polignac number, because 120310111243 - 2⁹ = 120310110731 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120310111243.

It is not an unprimeable number, because it can be changed into a prime (120310111249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8593579368 + ... + 8593579381.

It is an arithmetic number, because the mean of its divisors is an integer number (34374317500).

Almost surely, 2^120310111243 is an apocalyptic number.

120310111243 is a deficient number, since it is larger than the sum of its proper divisors (17187158757).

120310111243 is an equidigital number, since it uses as much as digits as its factorization.

120310111243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17187158756.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 120310111243 its reverse (342111013021), we get a palindrome (462421124264).

The spelling of 120310111243 in words is "one hundred twenty billion, three hundred ten million, one hundred eleven thousand, two hundred forty-three".