231330220032 has 48 divisors (see below), whose sum is σ = 616729997520. Its totient is φ = 77110071296.

The previous prime is 231330220027. The next prime is 231330220067. The reversal of 231330220032 is 230022033132.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 231330219990 and 231330220008.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18819558 + ... + 18831845.

It is an arithmetic number, because the mean of its divisors is an integer number (12848541615).

Almost surely, 2^231330220032 is an apocalyptic number.

It is an amenable number.

231330220032 is an abundant number, since it is smaller than the sum of its proper divisors (385399777488).

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

231330220032 is an equidigital number, since it uses as much as digits as its factorization.

231330220032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37651428 (or 37651408 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

Adding to 231330220032 its reverse (230022033132), we get a palindrome (461352253164).

The spelling of 231330220032 in words is "two hundred thirty-one billion, three hundred thirty million, two hundred twenty thousand, thirty-two".