231130317 has 32 divisors (see below), whose sum is σ = 362050560. Its totient is φ = 129585920.

The previous prime is 231130301. The next prime is 231130321. The reversal of 231130317 is 713031132.

It is a cyclic number.

It is not a de Polignac number, because 231130317 - 2⁴ = 231130301 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231130293 and 231130302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231130397) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29608 + ... + 36590.

It is an arithmetic number, because the mean of its divisors is an integer number (11314080).

Almost surely, 2^231130317 is an apocalyptic number.

It is an amenable number.

231130317 is a deficient number, since it is larger than the sum of its proper divisors (130920243).

231130317 is a wasteful number, since it uses less digits than its factorization.

231130317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7073.

The product of its (nonzero) digits is 378, while the sum is 21.

The square root of 231130317 is about 15202.9706636565. The cubic root of 231130317 is about 613.6946043916.

Adding to 231130317 its reverse (713031132), we get a palindrome (944161449).

The spelling of 231130317 in words is "two hundred thirty-one million, one hundred thirty thousand, three hundred seventeen".