1313144340 has 48 divisors (see below), whose sum is σ = 3870323520. Its totient is φ = 331741440.

The previous prime is 1313144333. The next prime is 1313144341. The reversal of 1313144340 is 434413131.

It is a self number, because there is not a number n which added to its sum of digits gives 1313144340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313144341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 574801 + ... + 577080.

It is an arithmetic number, because the mean of its divisors is an integer number (80631740).

Almost surely, 2^1313144340 is an apocalyptic number.

1313144340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1313144340 is an abundant number, since it is smaller than the sum of its proper divisors (2557179180).

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

1313144340 is a wasteful number, since it uses less digits than its factorization.

1313144340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1151912 (or 1151910 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 1313144340 is about 36237.3335111733. Note that the first 3 decimals coincide. The cubic root of 1313144340 is about 1095.0589238740.

Adding to 1313144340 its reverse (434413131), we get a palindrome (1747557471).

The spelling of 1313144340 in words is "one billion, three hundred thirteen million, one hundred forty-four thousand, three hundred forty".