203434111453 has 8 divisors (see below), whose sum is σ = 205994275200. Its totient is φ = 200876546688.

The previous prime is 203434111393. The next prime is 203434111493. The reversal of 203434111453 is 354111434302.

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 203434111453 - 2⁹ = 203434110941 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 (203434111493) 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, 491973 + ... + 805546.

It is an arithmetic number, because the mean of its divisors is an integer number (25749284400).

Almost surely, 2^203434111453 is an apocalyptic number.

It is an amenable number.

203434111453 is a deficient number, since it is larger than the sum of its proper divisors (2560163747).

203434111453 is a wasteful number, since it uses less digits than its factorization.

203434111453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299491.

The product of its (nonzero) digits is 17280, while the sum is 31.

Adding to 203434111453 its reverse (354111434302), we get a palindrome (557545545755).

The spelling of 203434111453 in words is "two hundred three billion, four hundred thirty-four million, one hundred eleven thousand, four hundred fifty-three".