1311212002 has 16 divisors (see below), whose sum is σ = 2071389600. Its totient is φ = 620784000.

The previous prime is 1311211999. The next prime is 1311212009. The reversal of 1311212002 is 2002121131.

It is not an unprimeable number, because it can be changed into a prime (1311212009) 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, 77874 + ... + 93202.

It is an arithmetic number, because the mean of its divisors is an integer number (129461850).

Almost surely, 2^1311212002 is an apocalyptic number.

1311212002 is a deficient number, since it is larger than the sum of its proper divisors (760177598).

1311212002 is a wasteful number, since it uses less digits than its factorization.

1311212002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17601.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1311212002 is about 36210.6614410728. The cubic root of 1311212002 is about 1094.5215209676.

Adding to 1311212002 its reverse (2002121131), we get a palindrome (3313333133).

The spelling of 1311212002 in words is "one billion, three hundred eleven million, two hundred twelve thousand, two".