1311301233020 has 12 divisors (see below), whose sum is σ = 2753732589384. Its totient is φ = 524520493200.

The previous prime is 1311301232981. The next prime is 1311301233043. The reversal of 1311301233020 is 203321031131.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 65565061651 = 1311301233020 / (1 + 3 + 1 + 1 + 3 + 0 + 1 + 2 + 3 + 3 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 1311301232983 and 1311301233001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32782530806 + ... + 32782530845.

It is an arithmetic number, because the mean of its divisors is an integer number (229477715782).

Almost surely, 2^{1311301233020} is an apocalyptic number.

1311301233020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311301233020 is an abundant number, since it is smaller than the sum of its proper divisors (1442431356364).

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

1311301233020 is a wasteful number, since it uses less digits than its factorization.

1311301233020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65565061660 (or 65565061658 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1311301233020 its reverse (203321031131), we get a palindrome (1514622264151).

The spelling of 1311301233020 in words is "one trillion, three hundred eleven billion, three hundred one million, two hundred thirty-three thousand, twenty".