130631317 has 4 divisors (see below), whose sum is σ = 132772876. Its totient is φ = 128489760.

The previous prime is 130631309. The next prime is 130631321. The reversal of 130631317 is 713136031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 713136031 = 1193 ⋅597767.

It can be written as a sum of positive squares in 2 ways, for example, as 3189796 + 127441521 = 1786^2 + 11289^2 .

It is a cyclic number.

It is not a de Polignac number, because 130631317 - 2³ = 130631309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130631291 and 130631300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130631387) 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, 1070688 + ... + 1070809.

It is an arithmetic number, because the mean of its divisors is an integer number (33193219).

Almost surely, 2^130631317 is an apocalyptic number.

It is an amenable number.

130631317 is a deficient number, since it is larger than the sum of its proper divisors (2141559).

130631317 is an equidigital number, since it uses as much as digits as its factorization.

130631317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2141558.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 130631317 is about 11429.4058025778. The cubic root of 130631317 is about 507.3984097817.

Adding to 130631317 its reverse (713136031), we get a palindrome (843767348).

It can be divided in two parts, 1306 and 31317, that added together give a palindrome (32623).

The spelling of 130631317 in words is "one hundred thirty million, six hundred thirty-one thousand, three hundred seventeen".