1323415561 has 8 divisors (see below), whose sum is σ = 1487183040. Its totient is φ = 1168500432.

The previous prime is 1323415559. The next prime is 1323415603. The reversal of 1323415561 is 1655143231.

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 1323415561 - 2¹ = 1323415559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323415501) 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, 2212771 + ... + 2213368.

It is an arithmetic number, because the mean of its divisors is an integer number (185897880).

Almost surely, 2^1323415561 is an apocalyptic number.

It is an amenable number.

1323415561 is a deficient number, since it is larger than the sum of its proper divisors (163767479).

1323415561 is a wasteful number, since it uses less digits than its factorization.

1323415561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4426175.

The product of its digits is 10800, while the sum is 31.

The square root of 1323415561 is about 36378.7789927040. The cubic root of 1323415561 is about 1097.9066416200.

Adding to 1323415561 its reverse (1655143231), we get a palindrome (2978558792).

The spelling of 1323415561 in words is "one billion, three hundred twenty-three million, four hundred fifteen thousand, five hundred sixty-one".