120001311 has 16 divisors (see below), whose sum is σ = 177957120. Its totient is φ = 79921080.

The previous prime is 120001309. The next prime is 120001313. The reversal of 120001311 is 113100021.

It is an interprime number because it is at equal distance from previous prime (120001309) and next prime (120001313).

It is not a de Polignac number, because 120001311 - 2¹ = 120001309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 120001293 and 120001302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120001313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39886 + ... + 42788.

It is an arithmetic number, because the mean of its divisors is an integer number (11122320).

Almost surely, 2^120001311 is an apocalyptic number.

120001311 is a deficient number, since it is larger than the sum of its proper divisors (57955809).

120001311 is a wasteful number, since it uses less digits than its factorization.

120001311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4443 (or 4437 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 120001311 is about 10954.5109886293. The cubic root of 120001311 is about 493.2442110840.

Adding to 120001311 its reverse (113100021), we get a palindrome (233101332).

The spelling of 120001311 in words is "one hundred twenty million, one thousand, three hundred eleven".