10400103 has 32 divisors (see below), whose sum is σ = 17984000. Its totient is φ = 5937624.

The previous prime is 10400077. The next prime is 10400123. The reversal of 10400103 is 30100401.

It is not a de Polignac number, because 10400103 - 2⁸ = 10399847 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10400123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8700 + ... + 9822.

It is an arithmetic number, because the mean of its divisors is an integer number (562000).

Almost surely, 2^10400103 is an apocalyptic number.

10400103 is a deficient number, since it is larger than the sum of its proper divisors (7583897).

10400103 is an equidigital number, since it uses as much as digits as its factorization.

10400103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153 (or 1133 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 10400103 is about 3224.9190687520. The cubic root of 10400103 is about 218.2792972090.

Adding to 10400103 its reverse (30100401), we get a palindrome (40500504).

The spelling of 10400103 in words is "ten million, four hundred thousand, one hundred three".