231641120 has 48 divisors (see below), whose sum is σ = 548166528. Its totient is φ = 92501760.

The previous prime is 231641089. The next prime is 231641147. The reversal of 231641120 is 21146132.

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 = 231641092 and 231641101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173897 + ... + 175223.

It is an arithmetic number, because the mean of its divisors is an integer number (11420136).

Almost surely, 2^231641120 is an apocalyptic number.

231641120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231641120 is an abundant number, since it is smaller than the sum of its proper divisors (316525408).

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

231641120 is a wasteful number, since it uses less digits than its factorization.

231641120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2433 (or 2425 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 231641120 is about 15219.7608391196. The cubic root of 231641120 is about 614.1463645383.

Adding to 231641120 its reverse (21146132), we get a palindrome (252787252).

The spelling of 231641120 in words is "two hundred thirty-one million, six hundred forty-one thousand, one hundred twenty".