320323121133131 has 4 divisors (see below), whose sum is σ = 339165657670392. Its totient is φ = 301480584595872.

The previous prime is 320323121133073. The next prime is 320323121133181. The reversal of 320323121133131 is 131331121323023.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320323121133131 is a prime.

It is a super-2 number, since 2×320323121133131² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320323121133094 and 320323121133103.

It is not an unprimeable number, because it can be changed into a prime (320323121133181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9421268268605 + ... + 9421268268638.

It is an arithmetic number, because the mean of its divisors is an integer number (84791414417598).

Almost surely, 2^{320323121133131} is an apocalyptic number.

320323121133131 is a deficient number, since it is larger than the sum of its proper divisors (18842536537261).

320323121133131 is a wasteful number, since it uses less digits than its factorization.

320323121133131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18842536537260.

The product of its (nonzero) digits is 5832, while the sum is 29.

Adding to 320323121133131 its reverse (131331121323023), we get a palindrome (451654242456154).

The spelling of 320323121133131 in words is "three hundred twenty trillion, three hundred twenty-three billion, one hundred twenty-one million, one hundred thirty-three thousand, one hundred thirty-one".