233031021312 has 144 divisors (see below), whose sum is σ = 657614909952. Its totient is φ = 73004236800.

The previous prime is 233031021271. The next prime is 233031021359. The reversal of 233031021312 is 213120130332.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9479437 + ... + 9503987.

It is an arithmetic number, because the mean of its divisors is an integer number (4566770208).

Almost surely, 2^233031021312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 233031021312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (328807454976).

233031021312 is an abundant number, since it is smaller than the sum of its proper divisors (424583888640).

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

233031021312 is a wasteful number, since it uses less digits than its factorization.

233031021312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25314 (or 25300 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 233031021312 its reverse (213120130332), we get a palindrome (446151151644).

The spelling of 233031021312 in words is "two hundred thirty-three billion, thirty-one million, twenty-one thousand, three hundred twelve".