1321061318 has 8 divisors (see below), whose sum is σ = 1983229248. Its totient is φ = 659984904.

The previous prime is 1321061309. The next prime is 1321061353. The reversal of 1321061318 is 8131601231.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269846 + ... + 274697.

It is an arithmetic number, because the mean of its divisors is an integer number (247903656).

Almost surely, 2^1321061318 is an apocalyptic number.

1321061318 is a deficient number, since it is larger than the sum of its proper divisors (662167930).

1321061318 is a wasteful number, since it uses less digits than its factorization.

1321061318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545758.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1321061318 is about 36346.4072227229. The cubic root of 1321061318 is about 1097.2552278855.

Adding to 1321061318 its reverse (8131601231), we get a palindrome (9452662549).

The spelling of 1321061318 in words is "one billion, three hundred twenty-one million, sixty-one thousand, three hundred eighteen".