1213530613 has 8 divisors (see below), whose sum is σ = 1233694080. Its totient is φ = 1193487360.

The previous prime is 1213530583. The next prime is 1213530631. The reversal of 1213530613 is 3160353121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1213530613 - 2¹³ = 1213522421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213530673) 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 7 ways as a sum of consecutive naturals, for example, 9583 + ... + 50188.

It is an arithmetic number, because the mean of its divisors is an integer number (154211760).

Almost surely, 2^1213530613 is an apocalyptic number.

It is an amenable number.

1213530613 is a deficient number, since it is larger than the sum of its proper divisors (20163467).

1213530613 is an equidigital number, since it uses as much as digits as its factorization.

1213530613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60107.

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

The square root of 1213530613 is about 34835.7662898349. The cubic root of 1213530613 is about 1066.6376570995.

Adding to 1213530613 its reverse (3160353121), we get a palindrome (4373883734).

The spelling of 1213530613 in words is "one billion, two hundred thirteen million, five hundred thirty thousand, six hundred thirteen".