320793813 has 12 divisors (see below), whose sum is σ = 465218208. Its totient is φ = 213009000.

The previous prime is 320793787. The next prime is 320793899. The reversal of 320793813 is 318397023.

It is a happy number.

It is not a de Polignac number, because 320793813 - 2⁶ = 320793749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320793013) 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 11 ways as a sum of consecutive naturals, for example, 68745 + ... + 73262.

It is an arithmetic number, because the mean of its divisors is an integer number (38768184).

Almost surely, 2^320793813 is an apocalyptic number.

It is an amenable number.

320793813 is a deficient number, since it is larger than the sum of its proper divisors (144424395).

320793813 is a wasteful number, since it uses less digits than its factorization.

320793813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142264 (or 142261 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 320793813 is about 17910.7178248109. The cubic root of 320793813 is about 684.5554954461. Note that the first 3 decimals are identical.

It can be divided in two parts, 3207 and 93813, that added together give a triangular number (97020 = T₄₄₀).

The spelling of 320793813 in words is "three hundred twenty million, seven hundred ninety-three thousand, eight hundred thirteen".