231042132 has 60 divisors (see below), whose sum is σ = 623500416. Its totient is φ = 74526480.

The previous prime is 231042127. The next prime is 231042157. The reversal of 231042132 is 231240132.

231042132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1458 + ... + 21545.

Almost surely, 2^231042132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231042132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311750208).

231042132 is an abundant number, since it is smaller than the sum of its proper divisors (392458284).

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

231042132 is a wasteful number, since it uses less digits than its factorization.

231042132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23050 (or 23039 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 231042132 is about 15200.0701314172. The cubic root of 231042132 is about 613.6165451916.

Adding to 231042132 its reverse (231240132), we get a palindrome (462282264).

The spelling of 231042132 in words is "two hundred thirty-one million, forty-two thousand, one hundred thirty-two".