400103111 has 4 divisors (see below), whose sum is σ = 413899800. Its totient is φ = 386306424.

The previous prime is 400103071. The next prime is 400103113. The reversal of 400103111 is 111301004.

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 400103111 - 2⁶ = 400103047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 400103092 and 400103101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400103113) 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, 6898301 + ... + 6898358.

It is an arithmetic number, because the mean of its divisors is an integer number (103474950).

Almost surely, 2^400103111 is an apocalyptic number.

400103111 is a deficient number, since it is larger than the sum of its proper divisors (13796689).

400103111 is a wasteful number, since it uses less digits than its factorization.

400103111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13796688.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 400103111 is about 20002.5776088983. The cubic root of 400103111 is about 736.8696049841.

Adding to 400103111 its reverse (111301004), we get a palindrome (511404115).

The spelling of 400103111 in words is "four hundred million, one hundred three thousand, one hundred eleven".