400234313 has 4 divisors (see below), whose sum is σ = 405871488. Its totient is φ = 394597140.

The previous prime is 400234301. The next prime is 400234321. The reversal of 400234313 is 313432004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 400234313 - 2⁸ = 400234057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400233313) 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 3 ways as a sum of consecutive naturals, for example, 2818481 + ... + 2818622.

It is an arithmetic number, because the mean of its divisors is an integer number (101467872).

Almost surely, 2^400234313 is an apocalyptic number.

It is an amenable number.

400234313 is a deficient number, since it is larger than the sum of its proper divisors (5637175).

400234313 is an equidigital number, since it uses as much as digits as its factorization.

400234313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5637174.

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

The square root of 400234313 is about 20005.8569673983. The cubic root of 400234313 is about 736.9501410572.

Adding to 400234313 its reverse (313432004), we get a palindrome (713666317).

The spelling of 400234313 in words is "four hundred million, two hundred thirty-four thousand, three hundred thirteen".