120403311 has 16 divisors (see below), whose sum is σ = 187739904. Its totient is φ = 67201344.

The previous prime is 120403307. The next prime is 120403319. The reversal of 120403311 is 113304021.

It is not a de Polignac number, because 120403311 - 2² = 120403307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120403319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65766 + ... + 67571.

It is an arithmetic number, because the mean of its divisors is an integer number (11733744).

Almost surely, 2^120403311 is an apocalyptic number.

120403311 is a deficient number, since it is larger than the sum of its proper divisors (67336593).

120403311 is a wasteful number, since it uses less digits than its factorization.

120403311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133390.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 120403311 is about 10972.8442529729. The cubic root of 120403311 is about 493.7943805431.

Adding to 120403311 its reverse (113304021), we get a palindrome (233707332).

It can be divided in two parts, 12040 and 3311, that added together give a palindrome (15351).

The spelling of 120403311 in words is "one hundred twenty million, four hundred three thousand, three hundred eleven".