1311323232321 has 16 divisors (see below), whose sum is σ = 1953930577920. Its totient is φ = 869162216400.

The previous prime is 1311323232319. The next prime is 1311323232343. The reversal of 1311323232321 is 1232323231131.

1311323232321 is a `hidden beast` number, since 1 + 3 + 1 + 13 + 2 + 323 + 2 + 321 = 666.

It is not a de Polignac number, because 1311323232321 - 2¹ = 1311323232319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1311323232521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140363905 + ... + 140373246.

It is an arithmetic number, because the mean of its divisors is an integer number (122120661120).

Almost surely, 2^{1311323232321} is an apocalyptic number.

It is an amenable number.

1311323232321 is a deficient number, since it is larger than the sum of its proper divisors (642607345599).

1311323232321 is a wasteful number, since it uses less digits than its factorization.

1311323232321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280737333 (or 280737327 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

Adding to 1311323232321 its reverse (1232323231131), we get a palindrome (2543646463452).

The spelling of 1311323232321 in words is "one trillion, three hundred eleven billion, three hundred twenty-three million, two hundred thirty-two thousand, three hundred twenty-one".