231341420 has 24 divisors (see below), whose sum is σ = 486188304. Its totient is φ = 92465856.

The previous prime is 231341417. The next prime is 231341431. The reversal of 231341420 is 24143132.

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 = 231341392 and 231341401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28319 + ... + 35561.

It is an arithmetic number, because the mean of its divisors is an integer number (20257846).

Almost surely, 2^231341420 is an apocalyptic number.

231341420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231341420 is an abundant number, since it is smaller than the sum of its proper divisors (254846884).

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

231341420 is a wasteful number, since it uses less digits than its factorization.

231341420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8849 (or 8847 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 231341420 is about 15209.9118998106. The cubic root of 231341420 is about 613.8813869700.

Adding to 231341420 its reverse (24143132), we get a palindrome (255484552).

The spelling of 231341420 in words is "two hundred thirty-one million, three hundred forty-one thousand, four hundred twenty".