1310231320211 has 48 divisors (see below), whose sum is σ = 1549975512960. Its totient is φ = 1095346437120.

The previous prime is 1310231320207. The next prime is 1310231320219. The reversal of 1310231320211 is 1120231320131.

It is a happy number.

It is not a de Polignac number, because 1310231320211 - 2² = 1310231320207 is a prime.

It is a super-2 number, since 2×1310231320211² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1310231320219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 126746435 + ... + 126756771.

It is an arithmetic number, because the mean of its divisors is an integer number (32291156520).

Almost surely, 2^{1310231320211} is an apocalyptic number.

1310231320211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1310231320211 is a deficient number, since it is larger than the sum of its proper divisors (239744192749).

1310231320211 is a wasteful number, since it uses less digits than its factorization.

1310231320211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10884 (or 10847 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1310231320211 its reverse (1120231320131), we get a palindrome (2430462640342).

It can be divided in two parts, 13102 and 31320211, that added together give a palindrome (31333313).

The spelling of 1310231320211 in words is "one trillion, three hundred ten billion, two hundred thirty-one million, three hundred twenty thousand, two hundred eleven".