251242204103 has 8 divisors (see below), whose sum is σ = 277942720896. Its totient is φ = 225185073400.

The previous prime is 251242204067. The next prime is 251242204163. The reversal of 251242204103 is 301402242152.

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 251242204103 - 2⁶ = 251242204039 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 (251242204163) 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, 160845701 + ... + 160847262.

It is an arithmetic number, because the mean of its divisors is an integer number (34742840112).

Almost surely, 2^251242204103 is an apocalyptic number.

251242204103 is a deficient number, since it is larger than the sum of its proper divisors (26700516793).

251242204103 is a wasteful number, since it uses less digits than its factorization.

251242204103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321693045.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 251242204103 its reverse (301402242152), we get a palindrome (552644446255).

The spelling of 251242204103 in words is "two hundred fifty-one billion, two hundred forty-two million, two hundred four thousand, one hundred three".