120311020 has 12 divisors (see below), whose sum is σ = 252653184. Its totient is φ = 48124400.

The previous prime is 120311011. The next prime is 120311047. The reversal of 120311020 is 20113021.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 120310988 and 120311006.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3007756 + ... + 3007795.

It is an arithmetic number, because the mean of its divisors is an integer number (21054432).

Almost surely, 2^120311020 is an apocalyptic number.

120311020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120311020 is an abundant number, since it is smaller than the sum of its proper divisors (132342164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120311020 is a wasteful number, since it uses less digits than its factorization.

120311020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6015560 (or 6015558 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 120311020 is about 10968.6380193714. The cubic root of 120311020 is about 493.6681812832.

Adding to 120311020 its reverse (20113021), we get a palindrome (140424041).

The spelling of 120311020 in words is "one hundred twenty million, three hundred eleven thousand, twenty".