243354230040 has 32 divisors (see below), whose sum is σ = 730062690480. Its totient is φ = 64894461312.

The previous prime is 243354230033. The next prime is 243354230069. The reversal of 243354230040 is 40032453342.

It is a super-2 number, since 2×243354230040² (a number of 24 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1013975839 + ... + 1013976078.

Almost surely, 2^243354230040 is an apocalyptic number.

243354230040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243354230040 is an abundant number, since it is smaller than the sum of its proper divisors (486708460440).

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

243354230040 is a wasteful number, since it uses less digits than its factorization.

243354230040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2027951931 (or 2027951927 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 30.

Adding to 243354230040 its reverse (40032453342), we get a palindrome (283386683382).

The spelling of 243354230040 in words is "two hundred forty-three billion, three hundred fifty-four million, two hundred thirty thousand, forty".