1311320213031 has 8 divisors (see below), whose sum is σ = 1749361446144. Its totient is φ = 873746227640.

The previous prime is 1311320213017. The next prime is 1311320213041. The reversal of 1311320213031 is 1303120231131.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1311320213031 - 2²⁹ = 1310783342119 is a prime.

It is a super-2 number, since 2×1311320213031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1311320212989 and 1311320213007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311320213011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116805381 + ... + 116816606.

It is an arithmetic number, because the mean of its divisors is an integer number (218670180768).

Almost surely, 2^{1311320213031} is an apocalyptic number.

1311320213031 is a deficient number, since it is larger than the sum of its proper divisors (438041233113).

1311320213031 is a wasteful number, since it uses less digits than its factorization.

1311320213031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233623861.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1311320213031 its reverse (1303120231131), we get a palindrome (2614440444162).

The spelling of 1311320213031 in words is "one trillion, three hundred eleven billion, three hundred twenty million, two hundred thirteen thousand, thirty-one".