1310313331 has 4 divisors (see below), whose sum is σ = 1310390464. Its totient is φ = 1310236200.

The previous prime is 1310313313. The next prime is 1310313343. The reversal of 1310313331 is 1333130131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1310313331 - 2⁷ = 1310313203 is a prime.

It is a super-2 number, since 2×1310313331² = 3433842050792631122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1310313299 and 1310313308.

It is not an unprimeable number, because it can be changed into a prime (1310313371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 675 + ... + 51196.

It is an arithmetic number, because the mean of its divisors is an integer number (327597616).

Almost surely, 2^1310313331 is an apocalyptic number.

1310313331 is a deficient number, since it is larger than the sum of its proper divisors (77133).

1310313331 is an equidigital number, since it uses as much as digits as its factorization.

1310313331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77132.

The product of its (nonzero) digits is 243, while the sum is 19.

The square root of 1310313331 is about 36198.2503858957. The cubic root of 1310313331 is about 1094.2714115145.

Adding to 1310313331 its reverse (1333130131), we get a palindrome (2643443462).

The spelling of 1310313331 in words is "one billion, three hundred ten million, three hundred thirteen thousand, three hundred thirty-one".