1313032331 has 4 divisors (see below), whose sum is σ = 1414034832. Its totient is φ = 1212029832.

The previous prime is 1313032321. The next prime is 1313032351. The reversal of 1313032331 is 1332303131.

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

It is not a de Polignac number, because 1313032331 - 2¹⁴ = 1313015947 is a prime.

It is a super-2 number, since 2×1313032331² = 3448107804502587122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313032321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50501231 + ... + 50501256.

It is an arithmetic number, because the mean of its divisors is an integer number (353508708).

Almost surely, 2^1313032331 is an apocalyptic number.

1313032331 is a deficient number, since it is larger than the sum of its proper divisors (101002501).

1313032331 is a wasteful number, since it uses less digits than its factorization.

1313032331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101002500.

The product of its (nonzero) digits is 486, while the sum is 20.

The square root of 1313032331 is about 36235.7879864644. The cubic root of 1313032331 is about 1095.0277874283.

Adding to 1313032331 its reverse (1332303131), we get a palindrome (2645335462).

The spelling of 1313032331 in words is "one billion, three hundred thirteen million, thirty-two thousand, three hundred thirty-one".