1321313131333 has 8 divisors (see below), whose sum is σ = 1423059561728. Its totient is φ = 1219581980784.

The previous prime is 1321313131291. The next prime is 1321313131337. The reversal of 1321313131333 is 3331313131231.

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 1321313131333 - 2³⁷ = 1183874177861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321313131337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3640041 + ... + 3986542.

It is an arithmetic number, because the mean of its divisors is an integer number (177882445216).

Almost surely, 2^{1321313131333} is an apocalyptic number.

1321313131333 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1321313131333 is a deficient number, since it is larger than the sum of its proper divisors (101746430395).

1321313131333 is a wasteful number, since it uses less digits than its factorization.

1321313131333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7639923.

The product of its digits is 4374, while the sum is 28.

Adding to 1321313131333 its reverse (3331313131231), we get a palindrome (4652626262564).

The spelling of 1321313131333 in words is "one trillion, three hundred twenty-one billion, three hundred thirteen million, one hundred thirty-one thousand, three hundred thirty-three".