1310242320 has 60 divisors (see below), whose sum is σ = 4400232876. Its totient is φ = 349397760.

The previous prime is 1310242319. The next prime is 1310242327. The reversal of 1310242320 is 232420131.

It can be written as a sum of positive squares in 2 ways, for example, as 532501776 + 777740544 = 23076^2 + 27888^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1310242293 and 1310242302.

It is not an unprimeable number, because it can be changed into a prime (1310242327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 909171 + ... + 910610.

Almost surely, 2^1310242320 is an apocalyptic number.

1310242320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1310242320 is an abundant number, since it is smaller than the sum of its proper divisors (3089990556).

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

1310242320 is a wasteful number, since it uses less digits than its factorization.

1310242320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819800 (or 1819791 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1310242320 is about 36197.2695102821. The cubic root of 1310242320 is about 1094.2516435427.

Adding to 1310242320 its reverse (232420131), we get a palindrome (1542662451).

The spelling of 1310242320 in words is "one billion, three hundred ten million, two hundred forty-two thousand, three hundred twenty".