231220033000 has 128 divisors (see below), whose sum is σ = 604639002240. Its totient is φ = 82029120000.

The previous prime is 231220032991. The next prime is 231220033027. The reversal of 231220033000 is 330022132.

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, 194659 + ... + 707341.

It is an arithmetic number, because the mean of its divisors is an integer number (4723742205).

Almost surely, 2^231220033000 is an apocalyptic number.

231220033000 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 231220033000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (302319501120).

231220033000 is an abundant number, since it is smaller than the sum of its proper divisors (373418969240).

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

231220033000 is a wasteful number, since it uses less digits than its factorization.

231220033000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512756 (or 512742 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 231220033000 its reverse (330022132), we get a palindrome (231550055132).

The spelling of 231220033000 in words is "two hundred thirty-one billion, two hundred twenty million, thirty-three thousand".