243201032520 has 128 divisors (see below), whose sum is σ = 736135741440. Its totient is φ = 64274031360.

The previous prime is 243201032509. The next prime is 243201032521. The reversal of 243201032520 is 25230102342.

It is a super-3 number, since 3×243201032520³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (243201032521) 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, 15094789 + ... + 15110891.

It is an arithmetic number, because the mean of its divisors is an integer number (5751060480).

Almost surely, 2^243201032520 is an apocalyptic number.

243201032520 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 243201032520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (368067870720).

243201032520 is an abundant number, since it is smaller than the sum of its proper divisors (492934708920).

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

243201032520 is a wasteful number, since it uses less digits than its factorization.

243201032520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17235 (or 17231 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 243201032520 its reverse (25230102342), we get a palindrome (268431134862).

The spelling of 243201032520 in words is "two hundred forty-three billion, two hundred one million, thirty-two thousand, five hundred twenty".