203121104430430 has 16 divisors (see below), whose sum is σ = 365849538343920. Its totient is φ = 81196986134592.

The previous prime is 203121104430367. The next prime is 203121104430449. The reversal of 203121104430430 is 34034401121302.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6431938119 + ... + 6431969698.

It is an arithmetic number, because the mean of its divisors is an integer number (22865596146495).

Almost surely, 2^{203121104430430} is an apocalyptic number.

203121104430430 is a deficient number, since it is larger than the sum of its proper divisors (162728433913490).

203121104430430 is a wasteful number, since it uses less digits than its factorization.

203121104430430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12863909403.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 203121104430430 its reverse (34034401121302), we get a palindrome (237155505551732).

The spelling of 203121104430430 in words is "two hundred three trillion, one hundred twenty-one billion, one hundred four million, four hundred thirty thousand, four hundred thirty".