320452013 has 12 divisors (see below), whose sum is σ = 376619292. Its totient is φ = 271837440.

The previous prime is 320452007. The next prime is 320452019. The reversal of 320452013 is 310254023.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (320452007) and next prime (320452019).

It can be written as a sum of positive squares in 2 ways, for example, as 169702729 + 150749284 = 13027^2 + 12278^2 .

It is not a de Polignac number, because 320452013 - 2⁴ = 320451997 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320452019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28958 + ... + 38463.

It is an arithmetic number, because the mean of its divisors is an integer number (31384941).

Almost surely, 2^320452013 is an apocalyptic number.

It is an amenable number.

320452013 is a deficient number, since it is larger than the sum of its proper divisors (56167279).

320452013 is an equidigital number, since it uses as much as digits as its factorization.

320452013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67532 (or 67525 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 320452013 is about 17901.1735090189. The cubic root of 320452013 is about 684.3122818834.

The spelling of 320452013 in words is "three hundred twenty million, four hundred fifty-two thousand, thirteen".