231435420 has 48 divisors (see below), whose sum is σ = 657702528. Its totient is φ = 60793920.

The previous prime is 231435401. The next prime is 231435431. The reversal of 231435420 is 24534132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24766 + ... + 32805.

It is an arithmetic number, because the mean of its divisors is an integer number (13702136).

Almost surely, 2^231435420 is an apocalyptic number.

231435420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231435420 is an abundant number, since it is smaller than the sum of its proper divisors (426267108).

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

231435420 is a wasteful number, since it uses less digits than its factorization.

231435420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57650 (or 57648 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 231435420 is about 15213.0016761979. The cubic root of 231435420 is about 613.9645210041.

Adding to 231435420 its reverse (24534132), we get a palindrome (255969552).

The spelling of 231435420 in words is "two hundred thirty-one million, four hundred thirty-five thousand, four hundred twenty".