400323103 has 4 divisors (see below), whose sum is σ = 421392760. Its totient is φ = 379253448.

The previous prime is 400323071. The next prime is 400323137. The reversal of 400323103 is 301323004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 400323103 - 2⁵ = 400323071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400323173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10534800 + ... + 10534837.

It is an arithmetic number, because the mean of its divisors is an integer number (105348190).

Almost surely, 2^400323103 is an apocalyptic number.

400323103 is a deficient number, since it is larger than the sum of its proper divisors (21069657).

400323103 is a wasteful number, since it uses less digits than its factorization.

400323103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21069656.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 400323103 is about 20008.0759444780. The cubic root of 400323103 is about 737.0046332741.

Adding to 400323103 its reverse (301323004), we get a palindrome (701646107).

Subtracting from 400323103 its reverse (301323004), we obtain a palindrome (99000099).

The spelling of 400323103 in words is "four hundred million, three hundred twenty-three thousand, one hundred three".