1311223030320 has 240 divisors, whose sum is σ = 4843760167008. Its totient is φ = 292398059520.

The previous prime is 1311223030301. The next prime is 1311223030331. The reversal of 1311223030320 is 230303221131.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 877579 + ... + 1841898.

Almost surely, 2^{1311223030320} is an apocalyptic number.

1311223030320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311223030320 is an abundant number, since it is smaller than the sum of its proper divisors (3532537136688).

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

1311223030320 is a wasteful number, since it uses less digits than its factorization.

1311223030320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2719548 (or 2719535 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1311223030320 its reverse (230303221131), we get a palindrome (1541526251451).

The spelling of 1311223030320 in words is "one trillion, three hundred eleven billion, two hundred twenty-three million, thirty thousand, three hundred twenty".