130400503 has 4 divisors (see below), whose sum is σ = 130618800. Its totient is φ = 130182208.

The previous prime is 130400497. The next prime is 130400507. The reversal of 130400503 is 305004031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 305004031 = 43 ⋅7093117.

It is a cyclic number.

It is not a de Polignac number, because 130400503 - 2⁵ = 130400471 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 (130400507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108250 + ... + 109447.

It is an arithmetic number, because the mean of its divisors is an integer number (32654700).

Almost surely, 2^130400503 is an apocalyptic number.

130400503 is a deficient number, since it is larger than the sum of its proper divisors (218297).

130400503 is an equidigital number, since it uses as much as digits as its factorization.

130400503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218296.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 130400503 is about 11419.3039630268. The cubic root of 130400503 is about 507.0993908733.

Adding to 130400503 its reverse (305004031), we get a palindrome (435404534).

The spelling of 130400503 in words is "one hundred thirty million, four hundred thousand, five hundred three".