240343431520 has 48 divisors (see below), whose sum is σ = 586127864448. Its totient is φ = 93036165120.

The previous prime is 240343431509. The next prime is 240343431527. The reversal of 240343431520 is 25134343042.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240343431527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24223209 + ... + 24233128.

It is an arithmetic number, because the mean of its divisors is an integer number (12210997176).

Almost surely, 2^240343431520 is an apocalyptic number.

240343431520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240343431520 is an abundant number, since it is smaller than the sum of its proper divisors (345784432928).

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

240343431520 is a wasteful number, since it uses less digits than its factorization.

240343431520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48456383 (or 48456375 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 240343431520 its reverse (25134343042), we get a palindrome (265477774562).

The spelling of 240343431520 in words is "two hundred forty billion, three hundred forty-three million, four hundred thirty-one thousand, five hundred twenty".