231435132 has 24 divisors (see below), whose sum is σ = 540342096. Its totient is φ = 77098368.

The previous prime is 231435121. The next prime is 231435179. The reversal of 231435132 is 231534132.

It is a congruent number.

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, 19078 + ... + 28754.

It is an arithmetic number, because the mean of its divisors is an integer number (22514254).

Almost surely, 2^231435132 is an apocalyptic number.

It is an amenable number.

231435132 is an abundant number, since it is smaller than the sum of its proper divisors (308906964).

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

231435132 is a wasteful number, since it uses less digits than its factorization.

231435132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11677 (or 11675 counting only the distinct ones).

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

The square root of 231435132 is about 15212.9922106074. The cubic root of 231435132 is about 613.9642663300.

Adding to 231435132 its reverse (231534132), we get a palindrome (462969264).

The spelling of 231435132 in words is "two hundred thirty-one million, four hundred thirty-five thousand, one hundred thirty-two".