231125420 has 24 divisors (see below), whose sum is σ = 493592400. Its totient is φ = 90882752.

The previous prime is 231125407. The next prime is 231125423. The reversal of 231125420 is 24521132.

231125420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 231125392 and 231125401.

It is not an unprimeable number, because it can be changed into a prime (231125423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96755 + ... + 99114.

It is an arithmetic number, because the mean of its divisors is an integer number (20566350).

Almost surely, 2^231125420 is an apocalyptic number.

231125420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231125420 is an abundant number, since it is smaller than the sum of its proper divisors (262466980).

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

231125420 is a wasteful number, since it uses less digits than its factorization.

231125420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195937 (or 195935 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 231125420 is about 15202.8096087532. The cubic root of 231125420 is about 613.6902702080.

Adding to 231125420 its reverse (24521132), we get a palindrome (255646552).

The spelling of 231125420 in words is "two hundred thirty-one million, one hundred twenty-five thousand, four hundred twenty".