1313612530 has 16 divisors (see below), whose sum is σ = 2422174104. Its totient is φ = 512629120.

The previous prime is 1313612513. The next prime is 1313612533. The reversal of 1313612530 is 352163131.

It can be written as a sum of positive squares in 4 ways, for example, as 651219361 + 662393169 = 25519^2 + 25737^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1313612495 and 1313612504.

It is not an unprimeable number, because it can be changed into a prime (1313612533) 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, 1601557 + ... + 1602376.

Almost surely, 2^1313612530 is an apocalyptic number.

1313612530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1313612530 is a deficient number, since it is larger than the sum of its proper divisors (1108561574).

1313612530 is a wasteful number, since it uses less digits than its factorization.

1313612530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3203981.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 1313612530 is about 36243.7929858341. The cubic root of 1313612530 is about 1095.1890529344.

Adding to 1313612530 its reverse (352163131), we get a palindrome (1665775661).

The spelling of 1313612530 in words is "one billion, three hundred thirteen million, six hundred twelve thousand, five hundred thirty".