203430520654 has 4 divisors (see below), whose sum is σ = 305145780984. Its totient is φ = 101715260326.

The previous prime is 203430520637. The next prime is 203430520687. The reversal of 203430520654 is 456025034302.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50857630162 + ... + 50857630165.

It is an arithmetic number, because the mean of its divisors is an integer number (76286445246).

Almost surely, 2^203430520654 is an apocalyptic number.

203430520654 is a deficient number, since it is larger than the sum of its proper divisors (101715260330).

203430520654 is a wasteful number, since it uses less digits than its factorization.

203430520654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101715260329.

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 203430520654 its reverse (456025034302), we get a palindrome (659455554956).

The spelling of 203430520654 in words is "two hundred three billion, four hundred thirty million, five hundred twenty thousand, six hundred fifty-four".