1311244002402 has 32 divisors (see below), whose sum is σ = 2662179348672. Its totient is φ = 430468805184.

The previous prime is 1311244002391. The next prime is 1311244002421. The reversal of 1311244002402 is 2042004421131.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1626148 + ... + 2294960.

It is an arithmetic number, because the mean of its divisors is an integer number (83193104646).

Almost surely, 2^{1311244002402} is an apocalyptic number.

1311244002402 is an abundant number, since it is smaller than the sum of its proper divisors (1350935346270).

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

1311244002402 is a wasteful number, since it uses less digits than its factorization.

1311244002402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673762.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 1311244002402 its reverse (2042004421131), we get a palindrome (3353248423533).

The spelling of 1311244002402 in words is "one trillion, three hundred eleven billion, two hundred forty-four million, two thousand, four hundred two".