1213232313 has 16 divisors (see below), whose sum is σ = 1746184320. Its totient is φ = 746976384.

The previous prime is 1213232311. The next prime is 1213232329. The reversal of 1213232313 is 3132323121.

It is not a de Polignac number, because 1213232313 - 2¹ = 1213232311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1213232313.

It is not an unprimeable number, because it can be changed into a prime (1213232311) 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 15 ways as a sum of consecutive naturals, for example, 301156 + ... + 305157.

It is an arithmetic number, because the mean of its divisors is an integer number (109136520).

Almost surely, 2^1213232313 is an apocalyptic number.

It is an amenable number.

1213232313 is a deficient number, since it is larger than the sum of its proper divisors (532952007).

1213232313 is a wasteful number, since it uses less digits than its factorization.

1213232313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606368.

The product of its digits is 648, while the sum is 21.

The square root of 1213232313 is about 34831.4845075544. The cubic root of 1213232313 is about 1066.5502526056.

Adding to 1213232313 its reverse (3132323121), we get a palindrome (4345555434).

The spelling of 1213232313 in words is "one billion, two hundred thirteen million, two hundred thirty-two thousand, three hundred thirteen".