243351001020 has 48 divisors (see below), whose sum is σ = 682770630528. Its totient is φ = 64761426240.

The previous prime is 243351001007. The next prime is 243351001043. The reversal of 243351001020 is 20100153342.

It is a congruent number.

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, 4100734 + ... + 4159653.

It is an arithmetic number, because the mean of its divisors is an integer number (14224388136).

Almost surely, 2^243351001020 is an apocalyptic number.

243351001020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243351001020 is an abundant number, since it is smaller than the sum of its proper divisors (439419629508).

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

243351001020 is a wasteful number, since it uses less digits than its factorization.

243351001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8260890 (or 8260888 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 243351001020 its reverse (20100153342), we get a palindrome (263451154362).

The spelling of 243351001020 in words is "two hundred forty-three billion, three hundred fifty-one million, one thousand, twenty".