320676743 has 4 divisors (see below), whose sum is σ = 329343720. Its totient is φ = 312009768.

The previous prime is 320676709. The next prime is 320676761. The reversal of 320676743 is 347676023.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 347676023 = 41 ⋅8479903.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320676743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320676697 and 320676706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320676043) 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, 4333433 + ... + 4333506.

It is an arithmetic number, because the mean of its divisors is an integer number (82335930).

Almost surely, 2^320676743 is an apocalyptic number.

320676743 is a deficient number, since it is larger than the sum of its proper divisors (8666977).

320676743 is an equidigital number, since it uses as much as digits as its factorization.

320676743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8666976.

The product of its (nonzero) digits is 127008, while the sum is 38.

The square root of 320676743 is about 17907.4493717000. The cubic root of 320676743 is about 684.4722117714.

The spelling of 320676743 in words is "three hundred twenty million, six hundred seventy-six thousand, seven hundred forty-three".