1310340420 has 36 divisors (see below), whose sum is σ = 3974699820. Its totient is φ = 349424064.

The previous prime is 1310340391. The next prime is 1310340461. The reversal of 1310340420 is 240430131.

It can be written as a sum of positive squares in 2 ways, for example, as 218566656 + 1091773764 = 14784^2 + 33042^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 = 1310340393 and 1310340402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3639655 + ... + 3640014.

Almost surely, 2^1310340420 is an apocalyptic number.

1310340420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1310340420 is an abundant number, since it is smaller than the sum of its proper divisors (2664359400).

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

1310340420 is a wasteful number, since it uses less digits than its factorization.

1310340420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7279684 (or 7279679 counting only the distinct ones).

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

The square root of 1310340420 is about 36198.6245595050. The cubic root of 1310340420 is about 1094.2789523353.

Adding to 1310340420 its reverse (240430131), we get a palindrome (1550770551).

The spelling of 1310340420 in words is "one billion, three hundred ten million, three hundred forty thousand, four hundred twenty".