233121312320 has 56 divisors (see below), whose sum is σ = 597821683704. Its totient is φ = 86075559936.

The previous prime is 233121312301. The next prime is 233121312343. The reversal of 233121312320 is 23213121332.

It can be written as a sum of positive squares in 4 ways, for example, as 9407448064 + 223713864256 = 96992^2 + 472984^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28015229 + ... + 28023548.

It is an arithmetic number, because the mean of its divisors is an integer number (10675387209).

Almost surely, 2^233121312320 is an apocalyptic number.

233121312320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

233121312320 is an abundant number, since it is smaller than the sum of its proper divisors (364700371384).

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

233121312320 is a wasteful number, since it uses less digits than its factorization.

233121312320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56038807 (or 56038797 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 233121312320 its reverse (23213121332), we get a palindrome (256334433652).

The spelling of 233121312320 in words is "two hundred thirty-three billion, one hundred twenty-one million, three hundred twelve thousand, three hundred twenty".