400203112 has 16 divisors (see below), whose sum is σ = 757395360. Its totient is φ = 198231024.

The previous prime is 400203049. The next prime is 400203113. The reversal of 400203112 is 211302004.

It is a junction number, because it is equal to n+sod(n) for n = 400203092 and 400203101.

It is not an unprimeable number, because it can be changed into a prime (400203113) 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, 232908 + ... + 234619.

It is an arithmetic number, because the mean of its divisors is an integer number (47337210).

Almost surely, 2^400203112 is an apocalyptic number.

It is an amenable number.

400203112 is a deficient number, since it is larger than the sum of its proper divisors (357192248).

400203112 is a wasteful number, since it uses less digits than its factorization.

400203112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467640 (or 467636 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 400203112 is about 20005.0771555623. The cubic root of 400203112 is about 736.9309904596.

Adding to 400203112 its reverse (211302004), we get a palindrome (611505116).

The spelling of 400203112 in words is "four hundred million, two hundred three thousand, one hundred twelve".