243115313250 has 32 divisors (see below), whose sum is σ = 606815823744. Its totient is φ = 64830750000.

The previous prime is 243115313249. The next prime is 243115313251. The reversal of 243115313250 is 52313511342.

It is an interprime number because it is at equal distance from previous prime (243115313249) and next prime (243115313251).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (243115313251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162076126 + ... + 162077625.

It is an arithmetic number, because the mean of its divisors is an integer number (18962994492).

Almost surely, 2^243115313250 is an apocalyptic number.

243115313250 is an abundant number, since it is smaller than the sum of its proper divisors (363700510494).

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

243115313250 is a wasteful number, since it uses less digits than its factorization.

243115313250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324153771 (or 324153761 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 243115313250 its reverse (52313511342), we get a palindrome (295428824592).

The spelling of 243115313250 in words is "two hundred forty-three billion, one hundred fifteen million, three hundred thirteen thousand, two hundred fifty".