242731320 has 96 divisors (see below), whose sum is σ = 788583600. Its totient is φ = 59744256.

The previous prime is 242731301. The next prime is 242731331. The reversal of 242731320 is 23137242.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14296 + ... + 26264.

Almost surely, 2^242731320 is an apocalyptic number.

242731320 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 242731320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394291800).

242731320 is an abundant number, since it is smaller than the sum of its proper divisors (545852280).

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

242731320 is a wasteful number, since it uses less digits than its factorization.

242731320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12009 (or 11992 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 242731320 is about 15579.8369696220. The cubic root of 242731320 is about 623.7950715955.

Adding to 242731320 its reverse (23137242), we get a palindrome (265868562).

The spelling of 242731320 in words is "two hundred forty-two million, seven hundred thirty-one thousand, three hundred twenty".