1311322002 has 32 divisors (see below), whose sum is σ = 2668489920. Its totient is φ = 429481920.

The previous prime is 1311321997. The next prime is 1311322003. The reversal of 1311322002 is 2002231131.

It is not an unprimeable number, because it can be changed into a prime (1311322003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 591448 + ... + 593660.

It is an arithmetic number, because the mean of its divisors is an integer number (83390310).

Almost surely, 2^1311322002 is an apocalyptic number.

1311322002 is an abundant number, since it is smaller than the sum of its proper divisors (1357167918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311322002 is a wasteful number, since it uses less digits than its factorization.

1311322002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3898.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1311322002 is about 36212.1802988994. The cubic root of 1311322002 is about 1094.5521272566.

Adding to 1311322002 its reverse (2002231131), we get a palindrome (3313553133).

The spelling of 1311322002 in words is "one billion, three hundred eleven million, three hundred twenty-two thousand, two".