231033000 has 128 divisors (see below), whose sum is σ = 786464640. Its totient is φ = 56000000.

The previous prime is 231032983. The next prime is 231033001. The reversal of 231033000 is 330132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (231033001) 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, 29500 + ... + 36500.

It is an arithmetic number, because the mean of its divisors is an integer number (6144255).

Almost surely, 2^231033000 is an apocalyptic number.

231033000 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 231033000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (393232320).

231033000 is an abundant number, since it is smaller than the sum of its proper divisors (555431640).

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

231033000 is a wasteful number, since it uses less digits than its factorization.

231033000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7036 (or 7022 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 12.

The square root of 231033000 is about 15199.7697350980. The cubic root of 231033000 is about 613.6084606342.

Adding to 231033000 its reverse (330132), we get a palindrome (231363132).

The spelling of 231033000 in words is "two hundred thirty-one million, thirty-three thousand".