120123312311 has 4 divisors (see below), whose sum is σ = 121361697072. Its totient is φ = 118884927552.

The previous prime is 120123312299. The next prime is 120123312313. The reversal of 120123312311 is 113213321021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120123312311 - 2²⁶ = 120056203447 is a prime.

It is a super-2 number, since 2×120123312311² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120123312313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 619192235 + ... + 619192428.

It is an arithmetic number, because the mean of its divisors is an integer number (30340424268).

Almost surely, 2^120123312311 is an apocalyptic number.

120123312311 is a deficient number, since it is larger than the sum of its proper divisors (1238384761).

120123312311 is an equidigital number, since it uses as much as digits as its factorization.

120123312311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238384760.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 120123312311 its reverse (113213321021), we get a palindrome (233336633332).

The spelling of 120123312311 in words is "one hundred twenty billion, one hundred twenty-three million, three hundred twelve thousand, three hundred eleven".