438313 has 2 divisors, whose sum is σ = 438314. Its totient is φ = 438312.

The previous prime is 438301. The next prime is 438329. The reversal of 438313 is 313834.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 242064 + 196249 = 492^2 + 443^2 .

It is a cyclic number.

It is not a de Polignac number, because 438313 - 2⁵ = 438281 is a prime.

It is not a weakly prime, because it can be changed into another prime (438913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 219156 + 219157.

It is an arithmetic number, because the mean of its divisors is an integer number (219157).

2⁴³⁸³¹³ is an apocalyptic number.

It is an amenable number.

438313 is a deficient number, since it is larger than the sum of its proper divisors (1).

438313 is an equidigital number, since it uses as much as digits as its factorization.

438313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 22.

The square root of 438313 is about 662.0521127525. The cubic root of 438313 is about 75.9617189483.

It can be divided in two parts, 43831 and 3, that added together give a palindrome (43834).

The spelling of 438313 in words is "four hundred thirty-eight thousand, three hundred thirteen".