1313000331 has 4 divisors (see below), whose sum is σ = 1750667112. Its totient is φ = 875333552.

The previous prime is 1313000329. The next prime is 1313000341. The reversal of 1313000331 is 1330003131.

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 1313000331 - 2¹ = 1313000329 is a prime.

It is a super-2 number, since 2×1313000331² = 3447939738412219122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1313000331.

It is not an unprimeable number, because it can be changed into a prime (1313000341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218833386 + ... + 218833391.

It is an arithmetic number, because the mean of its divisors is an integer number (437666778).

Almost surely, 2^1313000331 is an apocalyptic number.

1313000331 is a deficient number, since it is larger than the sum of its proper divisors (437666781).

1313000331 is an equidigital number, since it uses as much as digits as its factorization.

1313000331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437666780.

The product of its (nonzero) digits is 81, while the sum is 15.

The square root of 1313000331 is about 36235.3464313507. The cubic root of 1313000331 is about 1095.0188916905.

Adding to 1313000331 its reverse (1330003131), we get a palindrome (2643003462).

The spelling of 1313000331 in words is "one billion, three hundred thirteen million, three hundred thirty-one", and thus it is an aban number.