404032313 has 2 divisors, whose sum is σ = 404032314. Its totient is φ = 404032312.

The previous prime is 404032261. The next prime is 404032367. The reversal of 404032313 is 313230404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 266603584 + 137428729 = 16328^2 + 11723^2 .

It is a cyclic number.

It is not a de Polignac number, because 404032313 - 2⁶ = 404032249 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (404032373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202016156 + 202016157.

It is an arithmetic number, because the mean of its divisors is an integer number (202016157).

Almost surely, 2^404032313 is an apocalyptic number.

It is an amenable number.

404032313 is a deficient number, since it is larger than the sum of its proper divisors (1).

404032313 is an equidigital number, since it uses as much as digits as its factorization.

404032313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 404032313 is about 20100.5550420878. Note that the first 3 decimals coincide. The cubic root of 404032313 is about 739.2738878211.

Adding to 404032313 its reverse (313230404), we get a palindrome (717262717).

The spelling of 404032313 in words is "four hundred four million, thirty-two thousand, three hundred thirteen".