103431503 has 6 divisors (see below), whose sum is σ = 120318336. Its totient is φ = 88655532.

The previous prime is 103431491. The next prime is 103431533. The reversal of 103431503 is 305134301.

It is a happy number.

It is not a de Polignac number, because 103431503 - 2²² = 99237199 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 (103431533) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1055375 + ... + 1055472.

It is an arithmetic number, because the mean of its divisors is an integer number (20053056).

Almost surely, 2^103431503 is an apocalyptic number.

103431503 is a deficient number, since it is larger than the sum of its proper divisors (16886833).

103431503 is an equidigital number, since it uses as much as digits as its factorization.

103431503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2110861 (or 2110854 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 103431503 is about 10170.1279736294. The cubic root of 103431503 is about 469.4084953665.

Adding to 103431503 its reverse (305134301), we get a palindrome (408565804).

The spelling of 103431503 in words is "one hundred three million, four hundred thirty-one thousand, five hundred three".