120311115 has 16 divisors (see below), whose sum is σ = 193682688. Its totient is φ = 63770976.

The previous prime is 120311101. The next prime is 120311129. The reversal of 120311115 is 511113021.

It is an interprime number because it is at equal distance from previous prime (120311101) and next prime (120311129).

It is not a de Polignac number, because 120311115 - 2¹⁴ = 120294731 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 120311094 and 120311103.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22159 + ... + 27048.

It is an arithmetic number, because the mean of its divisors is an integer number (12105168).

Almost surely, 2^120311115 is an apocalyptic number.

120311115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120311115 is a deficient number, since it is larger than the sum of its proper divisors (73371573).

120311115 is a wasteful number, since it uses less digits than its factorization.

120311115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49378.

The product of its (nonzero) digits is 30, while the sum is 15.

The square root of 120311115 is about 10968.6423498991. The cubic root of 120311115 is about 493.6683112200.

Adding to 120311115 its reverse (511113021), we get a palindrome (631424136).

The spelling of 120311115 in words is "one hundred twenty million, three hundred eleven thousand, one hundred fifteen".