130731403 has 4 divisors (see below), whose sum is σ = 142616088. Its totient is φ = 118846720.

The previous prime is 130731401. The next prime is 130731427. The reversal of 130731403 is 304137031.

It is a happy number.

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 130731403 - 2¹ = 130731401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130731401) 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, 5942326 + ... + 5942347.

It is an arithmetic number, because the mean of its divisors is an integer number (35654022).

Almost surely, 2^130731403 is an apocalyptic number.

130731403 is a deficient number, since it is larger than the sum of its proper divisors (11884685).

130731403 is a wasteful number, since it uses less digits than its factorization.

130731403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11884684.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 130731403 is about 11433.7834070792. The cubic root of 130731403 is about 507.5279614448.

Adding to 130731403 its reverse (304137031), we get a palindrome (434868434).

The spelling of 130731403 in words is "one hundred thirty million, seven hundred thirty-one thousand, four hundred three".