231025420 has 24 divisors (see below), whose sum is σ = 487096848. Its totient is φ = 92040000.

The previous prime is 231025381. The next prime is 231025453. The reversal of 231025420 is 24520132.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 17991 + ... + 28030.

It is an arithmetic number, because the mean of its divisors is an integer number (20295702).

Almost surely, 2^231025420 is an apocalyptic number.

231025420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231025420 is an abundant number, since it is smaller than the sum of its proper divisors (256071428).

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

231025420 is a wasteful number, since it uses less digits than its factorization.

231025420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46281 (or 46279 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 231025420 is about 15199.5203871701. The cubic root of 231025420 is about 613.6017499002.

Adding to 231025420 its reverse (24520132), we get a palindrome (255545552).

It can be divided in two parts, 2310 and 25420, that added together give a triangular number (27730 = T₂₃₅).

The spelling of 231025420 in words is "two hundred thirty-one million, twenty-five thousand, four hundred twenty".