231825191532 has 96 divisors (see below), whose sum is σ = 605757546240. Its totient is φ = 68396590080.

The previous prime is 231825191531. The next prime is 231825191561. The reversal of 231825191532 is 235191528132.

It is not an unprimeable number, because it can be changed into a prime (231825191531) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1711344 + ... + 1841832.

It is an arithmetic number, because the mean of its divisors is an integer number (6309974440).

Almost surely, 2^231825191532 is an apocalyptic number.

231825191532 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231825191532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302878773120).

231825191532 is an abundant number, since it is smaller than the sum of its proper divisors (373932354708).

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

231825191532 is a wasteful number, since it uses less digits than its factorization.

231825191532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130863 (or 130861 counting only the distinct ones).

The product of its digits is 129600, while the sum is 42.

The spelling of 231825191532 in words is "two hundred thirty-one billion, eight hundred twenty-five million, one hundred ninety-one thousand, five hundred thirty-two".