1310222320 has 80 divisors (see below), whose sum is σ = 3437860320. Its totient is φ = 460006400.

The previous prime is 1310222299. The next prime is 1310222339. The reversal of 1310222320 is 232220131.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 1310222294 and 1310222303.

It is a congruent number.

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, 151 + ... + 51190.

It is an arithmetic number, because the mean of its divisors is an integer number (42973254).

Almost surely, 2^1310222320 is an apocalyptic number.

1310222320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1310222320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1718930160).

1310222320 is an abundant number, since it is smaller than the sum of its proper divisors (2127638000).

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

1310222320 is a wasteful number, since it uses less digits than its factorization.

1310222320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51394 (or 51388 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1310222320 is about 36196.9932452959. The cubic root of 1310222320 is about 1094.2460758336.

Adding to 1310222320 its reverse (232220131), we get a palindrome (1542442451).

The spelling of 1310222320 in words is "one billion, three hundred ten million, two hundred twenty-two thousand, three hundred twenty".