231145124 has 96 divisors (see below), whose sum is σ = 523708416. Its totient is φ = 86929920.

The previous prime is 231145111. The next prime is 231145151. The reversal of 231145124 is 421541132.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 231145124.

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 31 ways as a sum of consecutive naturals, for example, 470519 + ... + 471009.

It is an arithmetic number, because the mean of its divisors is an integer number (5455296).

Almost surely, 2^231145124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231145124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261854208).

231145124 is an abundant number, since it is smaller than the sum of its proper divisors (292563292).

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

231145124 is a wasteful number, since it uses less digits than its factorization.

231145124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585 (or 583 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 231145124 is about 15203.4576330518. The cubic root of 231145124 is about 613.7077092381.

Adding to 231145124 its reverse (421541132), we get a palindrome (652686256).

The spelling of 231145124 in words is "two hundred thirty-one million, one hundred forty-five thousand, one hundred twenty-four".