231235620 has 96 divisors (see below), whose sum is σ = 807238656. Its totient is φ = 48048000.

The previous prime is 231235597. The next prime is 231235637. The reversal of 231235620 is 26532132.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20406 + ... + 29645.

It is an arithmetic number, because the mean of its divisors is an integer number (8408736).

Almost surely, 2^231235620 is an apocalyptic number.

231235620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231235620 is an abundant number, since it is smaller than the sum of its proper divisors (576003036).

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

231235620 is a wasteful number, since it uses less digits than its factorization.

231235620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50081 (or 50079 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 231235620 is about 15206.4335069075. The cubic root of 231235620 is about 613.7877900196.

Adding to 231235620 its reverse (26532132), we get a palindrome (257767752).

The spelling of 231235620 in words is "two hundred thirty-one million, two hundred thirty-five thousand, six hundred twenty".