400312423 has 8 divisors (see below), whose sum is σ = 458813600. Its totient is φ = 342139680.

The previous prime is 400312421. The next prime is 400312427. The reversal of 400312423 is 324213004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400312423 - 2¹ = 400312421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 400312423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400312421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79488 + ... + 84373.

It is an arithmetic number, because the mean of its divisors is an integer number (57351700).

Almost surely, 2^400312423 is an apocalyptic number.

400312423 is a deficient number, since it is larger than the sum of its proper divisors (58501177).

400312423 is a wasteful number, since it uses less digits than its factorization.

400312423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164217.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 400312423 is about 20007.8090504683. The cubic root of 400312423 is about 736.9980791686.

Adding to 400312423 its reverse (324213004), we get a palindrome (724525427).

The spelling of 400312423 in words is "four hundred million, three hundred twelve thousand, four hundred twenty-three".