1320313012331 has 4 divisors (see below), whose sum is σ = 1320359683272. Its totient is φ = 1320266341392.

The previous prime is 1320313012327. The next prime is 1320313012351. The reversal of 1320313012331 is 1332103130231.

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

It is a cyclic number.

It is not a de Polignac number, because 1320313012331 - 2² = 1320313012327 is a prime.

It is a super-2 number, since 2×1320313012331² (a number of 25 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 = 1320313012297 and 1320313012306.

It is not an unprimeable number, because it can be changed into a prime (1320313012301) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 23293010 + ... + 23349623.

It is an arithmetic number, because the mean of its divisors is an integer number (330089920818).

Almost surely, 2^{1320313012331} is an apocalyptic number.

1320313012331 is a deficient number, since it is larger than the sum of its proper divisors (46670941).

1320313012331 is an equidigital number, since it uses as much as digits as its factorization.

1320313012331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46670940.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1320313012331 its reverse (1332103130231), we get a palindrome (2652416142562).

The spelling of 1320313012331 in words is "one trillion, three hundred twenty billion, three hundred thirteen million, twelve thousand, three hundred thirty-one".