203534013143 has 4 divisors (see below), whose sum is σ = 208498257408. Its totient is φ = 198569768880.

The previous prime is 203534013113. The next prime is 203534013197. The reversal of 203534013143 is 341310435302.

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

It is a cyclic number.

It is not a de Polignac number, because 203534013143 - 2⁸ = 203534012887 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 (203534013103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2482122071 + ... + 2482122152.

It is an arithmetic number, because the mean of its divisors is an integer number (52124564352).

Almost surely, 2^203534013143 is an apocalyptic number.

203534013143 is a deficient number, since it is larger than the sum of its proper divisors (4964244265).

203534013143 is an equidigital number, since it uses as much as digits as its factorization.

203534013143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4964244264.

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 203534013143 its reverse (341310435302), we get a palindrome (544844448445).

The spelling of 203534013143 in words is "two hundred three billion, five hundred thirty-four million, thirteen thousand, one hundred forty-three".