130231224 has 24 divisors (see below), whose sum is σ = 352709760. Its totient is φ = 43410384.

The previous prime is 130231181. The next prime is 130231259. The reversal of 130231224 is 422132031.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 130231197 and 130231206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 904312 + ... + 904455.

It is an arithmetic number, because the mean of its divisors is an integer number (14696240).

Almost surely, 2^130231224 is an apocalyptic number.

It is an amenable number.

130231224 is an abundant number, since it is smaller than the sum of its proper divisors (222478536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

130231224 is a wasteful number, since it uses less digits than its factorization.

130231224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1808779 (or 1808772 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 130231224 is about 11411.8895893713. The cubic root of 130231224 is about 506.8798660313.

Adding to 130231224 its reverse (422132031), we get a palindrome (552363255).

The spelling of 130231224 in words is "one hundred thirty million, two hundred thirty-one thousand, two hundred twenty-four".