231532005452120 has 128 divisors (see below), whose sum is σ = 536643617126400. Its totient is φ = 89859264523776.

The previous prime is 231532005452107. The next prime is 231532005452161. The reversal of 231532005452120 is 21254500235132.

It is a super-2 number, since 2×231532005452120² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120705101 + ... + 122608259.

It is an arithmetic number, because the mean of its divisors is an integer number (4192528258800).

Almost surely, 2^{231532005452120} is an apocalyptic number.

231532005452120 is a gapful number since it is divisible by the number (20) 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 231532005452120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268321808563200).

231532005452120 is an abundant number, since it is smaller than the sum of its proper divisors (305111611674280).

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

231532005452120 is a wasteful number, since it uses less digits than its factorization.

231532005452120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1903777 (or 1903773 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

Adding to 231532005452120 its reverse (21254500235132), we get a palindrome (252786505687252).

The spelling of 231532005452120 in words is "two hundred thirty-one trillion, five hundred thirty-two billion, five million, four hundred fifty-two thousand, one hundred twenty".