1310020120 has 16 divisors (see below), whose sum is σ = 2947545360. Its totient is φ = 524008032.

The previous prime is 1310020109. The next prime is 1310020123. The reversal of 1310020120 is 210200131.

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 = 1310020097 and 1310020106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310020123) 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, 16375212 + ... + 16375291.

It is an arithmetic number, because the mean of its divisors is an integer number (184221585).

Almost surely, 2^1310020120 is an apocalyptic number.

1310020120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1310020120 is an abundant number, since it is smaller than the sum of its proper divisors (1637525240).

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

1310020120 is a wasteful number, since it uses less digits than its factorization.

1310020120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32750514 (or 32750510 counting only the distinct ones).

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

The square root of 1310020120 is about 36194.2000878594. The cubic root of 1310020120 is about 1094.1897831124.

Adding to 1310020120 its reverse (210200131), we get a palindrome (1520220251).

The spelling of 1310020120 in words is "one billion, three hundred ten million, twenty thousand, one hundred twenty".