231321130 has 8 divisors (see below), whose sum is σ = 416378052. Its totient is φ = 92528448.

The previous prime is 231321127. The next prime is 231321137. The reversal of 231321130 is 31123132.

It can be written as a sum of positive squares in 2 ways, for example, as 229007689 + 2313441 = 15133^2 + 1521^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (231321137) 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, 11566047 + ... + 11566066.

Almost surely, 2^231321130 is an apocalyptic number.

231321130 is a deficient number, since it is larger than the sum of its proper divisors (185056922).

231321130 is a wasteful number, since it uses less digits than its factorization.

231321130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23132120.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 231321130 is about 15209.2448859238. The cubic root of 231321130 is about 613.8634394454.

Adding to 231321130 its reverse (31123132), we get a palindrome (262444262).

The spelling of 231321130 in words is "two hundred thirty-one million, three hundred twenty-one thousand, one hundred thirty".