231102132 has 12 divisors (see below), whose sum is σ = 539238336. Its totient is φ = 77034040.

The previous prime is 231102119. The next prime is 231102133. The reversal of 231102132 is 231201132.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231102133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9629244 + ... + 9629267.

It is an arithmetic number, because the mean of its divisors is an integer number (44936528).

Almost surely, 2^231102132 is an apocalyptic number.

It is an amenable number.

231102132 is an abundant number, since it is smaller than the sum of its proper divisors (308136204).

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

231102132 is a wasteful number, since it uses less digits than its factorization.

231102132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19258518 (or 19258516 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 231102132 is about 15202.0436784006. The cubic root of 231102132 is about 613.6696578798.

Adding to 231102132 its reverse (231201132), we get a palindrome (462303264).

The spelling of 231102132 in words is "two hundred thirty-one million, one hundred two thousand, one hundred thirty-two".