231201130 has 16 divisors (see below), whose sum is σ = 416359944. Its totient is φ = 92436480.

The previous prime is 231201119. The next prime is 231201143. The reversal of 231201130 is 31102132.

It can be written as a sum of positive squares in 4 ways, for example, as 160959969 + 70241161 = 12687^2 + 8381^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 231201130.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24250 + ... + 32410.

Almost surely, 2^231201130 is an apocalyptic number.

231201130 is a deficient number, since it is larger than the sum of its proper divisors (185158814).

231201130 is a wasteful number, since it uses less digits than its factorization.

231201130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11001.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 231201130 is about 15205.2994051416. The cubic root of 231201130 is about 613.7572719510.

Adding to 231201130 its reverse (31102132), we get a palindrome (262303262).

The spelling of 231201130 in words is "two hundred thirty-one million, two hundred one thousand, one hundred thirty".