243400255103 has 8 divisors (see below), whose sum is σ = 246151146240. Its totient is φ = 240649720960.

The previous prime is 243400255099. The next prime is 243400255141. The reversal of 243400255103 is 301552004342.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 243400255103 - 2² = 243400255099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243400255403) 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, 1426658 + ... + 1588128.

It is an arithmetic number, because the mean of its divisors is an integer number (30768893280).

Almost surely, 2^243400255103 is an apocalyptic number.

243400255103 is a deficient number, since it is larger than the sum of its proper divisors (2750891137).

243400255103 is a wasteful number, since it uses less digits than its factorization.

243400255103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178497.

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 243400255103 its reverse (301552004342), we get a palindrome (544952259445).

The spelling of 243400255103 in words is "two hundred forty-three billion, four hundred million, two hundred fifty-five thousand, one hundred three".