231031130 has 32 divisors (see below), whose sum is σ = 459891648. Its totient is φ = 82857600.

The previous prime is 231031123. The next prime is 231031133. The reversal of 231031130 is 31130132.

231031130 = T₂₀ + T₂₁ + ... + T₁₁₁₄.

It is not an unprimeable number, because it can be changed into a prime (231031133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6356 + ... + 22415.

It is an arithmetic number, because the mean of its divisors is an integer number (14371614).

Almost surely, 2^231031130 is an apocalyptic number.

231031130 is a deficient number, since it is larger than the sum of its proper divisors (228860518).

231031130 is a wasteful number, since it uses less digits than its factorization.

231031130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28862.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 231031130 is about 15199.7082208837. The cubic root of 231031130 is about 613.6068050974.

Adding to 231031130 its reverse (31130132), we get a palindrome (262161262).

The spelling of 231031130 in words is "two hundred thirty-one million, thirty-one thousand, one hundred thirty".