233121244240 has 20 divisors (see below), whose sum is σ = 542006893044. Its totient is φ = 93248497664.

The previous prime is 233121244229. The next prime is 233121244243. The reversal of 233121244240 is 42442121332.

It can be written as a sum of positive squares in 2 ways, for example, as 121722836544 + 111398407696 = 348888^2 + 333764^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 233121244199 and 233121244208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233121244243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1457007697 + ... + 1457007856.

Almost surely, 2^233121244240 is an apocalyptic number.

233121244240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

233121244240 is an abundant number, since it is smaller than the sum of its proper divisors (308885648804).

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

233121244240 is a wasteful number, since it uses less digits than its factorization.

233121244240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2914015566 (or 2914015560 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 233121244240 its reverse (42442121332), we get a palindrome (275563365572).

The spelling of 233121244240 in words is "two hundred thirty-three billion, one hundred twenty-one million, two hundred forty-four thousand, two hundred forty".