120123331311 has 4 divisors (see below), whose sum is σ = 160164441752. Its totient is φ = 80082220872.

The previous prime is 120123331303. The next prime is 120123331313. The reversal of 120123331311 is 113133321021.

It is a happy number.

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

It is not a de Polignac number, because 120123331311 - 2³ = 120123331303 is a prime.

It is a super-2 number, since 2×120123331311² (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 (120123331313) 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, 20020555216 + ... + 20020555221.

It is an arithmetic number, because the mean of its divisors is an integer number (40041110438).

Almost surely, 2^120123331311 is an apocalyptic number.

120123331311 is a deficient number, since it is larger than the sum of its proper divisors (40041110441).

120123331311 is an equidigital number, since it uses as much as digits as its factorization.

120123331311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40041110440.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 120123331311 its reverse (113133321021), we get a palindrome (233256652332).

The spelling of 120123331311 in words is "one hundred twenty billion, one hundred twenty-three million, three hundred thirty-one thousand, three hundred eleven".