240131320 has 64 divisors (see below), whose sum is σ = 634767840. Its totient is φ = 80601600.

The previous prime is 240131299. The next prime is 240131327. The reversal of 240131320 is 23131042.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 240131294 and 240131303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240131327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15271 + ... + 26710.

Almost surely, 2^240131320 is an apocalyptic number.

240131320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

240131320 is an abundant number, since it is smaller than the sum of its proper divisors (394636520).

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

240131320 is a wasteful number, since it uses less digits than its factorization.

240131320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42016 (or 42012 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 240131320 is about 15496.1711399946. The cubic root of 240131320 is about 621.5598254611.

Adding to 240131320 its reverse (23131042), we get a palindrome (263262362).

The spelling of 240131320 in words is "two hundred forty million, one hundred thirty-one thousand, three hundred twenty".