120403040311 has 4 divisors (see below), whose sum is σ = 127485572112. Its totient is φ = 113320508512.

The previous prime is 120403040309. The next prime is 120403040321. The reversal of 120403040311 is 113040304021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113040304021 = 23 ⋅4914795827.

It is a cyclic number.

It is not a de Polignac number, because 120403040311 - 2¹ = 120403040309 is a prime.

It is a super-2 number, since 2×120403040311² (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 (120403040321) 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, 3541265875 + ... + 3541265908.

It is an arithmetic number, because the mean of its divisors is an integer number (31871393028).

Almost surely, 2^120403040311 is an apocalyptic number.

120403040311 is a deficient number, since it is larger than the sum of its proper divisors (7082531801).

120403040311 is an equidigital number, since it uses as much as digits as its factorization.

120403040311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7082531800.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 120403040311 its reverse (113040304021), we get a palindrome (233443344332).

The spelling of 120403040311 in words is "one hundred twenty billion, four hundred three million, forty thousand, three hundred eleven".