130731603 has 4 divisors (see below), whose sum is σ = 174308808. Its totient is φ = 87154400.

The previous prime is 130731589. The next prime is 130731613. The reversal of 130731603 is 306137031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 306137031 = 3 ⋅102045677.

It is a cyclic number.

It is not a de Polignac number, because 130731603 - 2⁸ = 130731347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (130731613) 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, 21788598 + ... + 21788603.

It is an arithmetic number, because the mean of its divisors is an integer number (43577202).

Almost surely, 2^130731603 is an apocalyptic number.

130731603 is a deficient number, since it is larger than the sum of its proper divisors (43577205).

130731603 is an equidigital number, since it uses as much as digits as its factorization.

130731603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43577204.

The product of its (nonzero) digits is 1134, while the sum is 24.

The square root of 130731603 is about 11433.7921530873. The cubic root of 130731603 is about 507.5282202593.

Adding to 130731603 its reverse (306137031), we get a palindrome (436868634).

The spelling of 130731603 in words is "one hundred thirty million, seven hundred thirty-one thousand, six hundred three".