400343103 has 12 divisors (see below), whose sum is σ = 578764368. Its totient is φ = 266668800.

The previous prime is 400343101. The next prime is 400343117. The reversal of 400343103 is 301343004.

It is not a de Polignac number, because 400343103 - 2¹ = 400343101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400343101) 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 11 ways as a sum of consecutive naturals, for example, 7323 + ... + 29228.

It is an arithmetic number, because the mean of its divisors is an integer number (48230364).

Almost surely, 2^400343103 is an apocalyptic number.

400343103 is a deficient number, since it is larger than the sum of its proper divisors (178421265).

400343103 is a wasteful number, since it uses less digits than its factorization.

400343103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37774 (or 37771 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 400343103 is about 20008.5757364186. The cubic root of 400343103 is about 737.0169065662.

Adding to 400343103 its reverse (301343004), we get a palindrome (701686107).

Subtracting from 400343103 its reverse (301343004), we obtain a palindrome (99000099).

The spelling of 400343103 in words is "four hundred million, three hundred forty-three thousand, one hundred three".