1313525530 has 16 divisors (see below), whose sum is σ = 2428247880. Its totient is φ = 511209792.

The previous prime is 1313525501. The next prime is 1313525531. The reversal of 1313525530 is 355253131.

It can be written as a sum of positive squares in 4 ways, for example, as 1238547249 + 74978281 = 35193^2 + 8659^2 .

It is not an unprimeable number, because it can be changed into a prime (1313525531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1774665 + ... + 1775404.

Almost surely, 2^1313525530 is an apocalyptic number.

1313525530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1313525530 is a deficient number, since it is larger than the sum of its proper divisors (1114722350).

1313525530 is a wasteful number, since it uses less digits than its factorization.

1313525530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3550113.

The product of its (nonzero) digits is 6750, while the sum is 28.

The square root of 1313525530 is about 36242.5927604524. The cubic root of 1313525530 is about 1095.1648744320.

Adding to 1313525530 its reverse (355253131), we get a palindrome (1668778661).

The spelling of 1313525530 in words is "one billion, three hundred thirteen million, five hundred twenty-five thousand, five hundred thirty".