231012132030 has 128 divisors (see below), whose sum is σ = 627132326400. Its totient is φ = 61258044960.

The previous prime is 231012132011. The next prime is 231012132041. The reversal of 231012132030 is 30231210132.

231012132030 is a `hidden beast` number, since 2 + 310 + 1 + 2 + 1 + 320 + 30 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 231012131994 and 231012132012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3885225 + ... + 3944235.

It is an arithmetic number, because the mean of its divisors is an integer number (4899471300).

Almost surely, 2^231012132030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231012132030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313566163200).

231012132030 is an abundant number, since it is smaller than the sum of its proper divisors (396120194370).

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

231012132030 is an equidigital number, since it uses as much as digits as its factorization.

231012132030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59218 (or 59200 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 231012132030 its reverse (30231210132), we get a palindrome (261243342162).

The spelling of 231012132030 in words is "two hundred thirty-one billion, twelve million, one hundred thirty-two thousand, thirty".