203007923523 has 6 divisors (see below), whose sum is σ = 293233667324. Its totient is φ = 135338615676.

The previous prime is 203007923513. The next prime is 203007923539. The reversal of 203007923523 is 325329700302.

It is not a de Polignac number, because 203007923523 - 2⁸ = 203007923267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203007923513) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11278217965 + ... + 11278217982.

Almost surely, 2^203007923523 is an apocalyptic number.

203007923523 is a deficient number, since it is larger than the sum of its proper divisors (90225743801).

203007923523 is a wasteful number, since it uses less digits than its factorization.

203007923523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22556435953 (or 22556435950 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 36.

The spelling of 203007923523 in words is "two hundred three billion, seven million, nine hundred twenty-three thousand, five hundred twenty-three".