1311300213031 has 4 divisors (see below), whose sum is σ = 1312945508952. Its totient is φ = 1309654917112.

The previous prime is 1311300213019. The next prime is 1311300213061. The reversal of 1311300213031 is 1303120031131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1311300213031 - 2²⁵ = 1311266658599 is a prime.

It is a super-2 number, since 2×1311300213031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311300213061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 822646765 + ... + 822648358.

It is an arithmetic number, because the mean of its divisors is an integer number (328236377238).

Almost surely, 2^{1311300213031} is an apocalyptic number.

1311300213031 is a deficient number, since it is larger than the sum of its proper divisors (1645295921).

1311300213031 is an equidigital number, since it uses as much as digits as its factorization.

1311300213031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645295920.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 1311300213031 its reverse (1303120031131), we get a palindrome (2614420244162).

The spelling of 1311300213031 in words is "one trillion, three hundred eleven billion, three hundred million, two hundred thirteen thousand, thirty-one".