203209856703 has 80 divisors (see below), whose sum is σ = 370429779456. Its totient is φ = 108487874880.

The previous prime is 203209856701. The next prime is 203209856827. The reversal of 203209856703 is 307658902302.

203209856703 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 203209856703 - 2¹ = 203209856701 is a prime.

It is a super-2 number, since 2×203209856703² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203209856701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 379573 + ... + 741953.

Almost surely, 2^203209856703 is an apocalyptic number.

203209856703 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

203209856703 is a deficient number, since it is larger than the sum of its proper divisors (167219922753).

203209856703 is a wasteful number, since it uses less digits than its factorization.

203209856703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362466 (or 362457 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 203209856703 in words is "two hundred three billion, two hundred nine million, eight hundred fifty-six thousand, seven hundred three".