231532420000000 has 576 divisors, whose sum is σ = 669555198434304. Its totient is φ = 78261120000000.

The previous prime is 231532419999943. The next prime is 231532420000019. The reversal of 231532420000000 is 24235132.

It is a super-2 number, since 2×231532420000000² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9939988354 + ... + 9940011646.

It is an arithmetic number, because the mean of its divisors is an integer number (1162422219504).

Almost surely, 2^{231532420000000} is an apocalyptic number.

231532420000000 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 231532420000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (334777599217152).

231532420000000 is an abundant number, since it is smaller than the sum of its proper divisors (438022778434304).

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

231532420000000 is an frugal number, since it uses more digits than its factorization.

231532420000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23422 (or 23378 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

Adding to 231532420000000 its reverse (24235132), we get a palindrome (231532444235132).

The spelling of 231532420000000 in words is "two hundred thirty-one trillion, five hundred thirty-two billion, four hundred twenty million", and thus it is an aban number.