231444130 has 32 divisors (see below), whose sum is σ = 445095360. Its totient is φ = 86391360.

The previous prime is 231444127. The next prime is 231444151. The reversal of 231444130 is 31444132.

It is a super-2 number, since 2×231444130² = 107132770622913800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3640 + ... + 21820.

It is an arithmetic number, because the mean of its divisors is an integer number (13909230).

Almost surely, 2^231444130 is an apocalyptic number.

231444130 is a deficient number, since it is larger than the sum of its proper divisors (213651230).

231444130 is a wasteful number, since it uses less digits than its factorization.

231444130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18274.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 231444130 is about 15213.2879417961. The cubic root of 231444130 is about 613.9722230287.

Adding to 231444130 its reverse (31444132), we get a palindrome (262888262).

The spelling of 231444130 in words is "two hundred thirty-one million, four hundred forty-four thousand, one hundred thirty".