1311023231202 has 16 divisors (see below), whose sum is σ = 2630477483712. Its totient is φ = 435602573520.

The previous prime is 1311023231201. The next prime is 1311023231207. The reversal of 1311023231202 is 2021323201131.

It is not an unprimeable number, because it can be changed into a prime (1311023231201) 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, 351290533 + ... + 351294264.

It is an arithmetic number, because the mean of its divisors is an integer number (164404842732).

Almost surely, 2^{1311023231202} is an apocalyptic number.

1311023231202 is an abundant number, since it is smaller than the sum of its proper divisors (1319454252510).

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

1311023231202 is a wasteful number, since it uses less digits than its factorization.

1311023231202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702585113.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1311023231202 its reverse (2021323201131), we get a palindrome (3332346432333).

The spelling of 1311023231202 in words is "one trillion, three hundred eleven billion, twenty-three million, two hundred thirty-one thousand, two hundred two".