1313540250 has 128 divisors (see below), whose sum is σ = 3610863360. Its totient is φ = 315392000.

The previous prime is 1313540233. The next prime is 1313540251. The reversal of 1313540250 is 520453131.

It is a self number, because there is not a number n which added to its sum of digits gives 1313540250.

It is not an unprimeable number, because it can be changed into a prime (1313540251) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 931546 + ... + 932954.

It is an arithmetic number, because the mean of its divisors is an integer number (28209870).

Almost surely, 2^1313540250 is an apocalyptic number.

1313540250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1313540250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1805431680).

1313540250 is an abundant number, since it is smaller than the sum of its proper divisors (2297323110).

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

1313540250 is a wasteful number, since it uses less digits than its factorization.

1313540250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1553 (or 1543 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 1313540250 is about 36242.7958358623. The cubic root of 1313540250 is about 1095.1689653985.

Adding to 1313540250 its reverse (520453131), we get a palindrome (1833993381).

The spelling of 1313540250 in words is "one billion, three hundred thirteen million, five hundred forty thousand, two hundred fifty".