203440313143 has 8 divisors (see below), whose sum is σ = 204069832560. Its totient is φ = 202811599680.

The previous prime is 203440313129. The next prime is 203440313171. The reversal of 203440313143 is 341313044302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203440313143 is a prime.

It is a super-2 number, since 2×203440313143² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203440313183) 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, 306108 + ... + 707518.

It is an arithmetic number, because the mean of its divisors is an integer number (25508729070).

Almost surely, 2^203440313143 is an apocalyptic number.

203440313143 is a deficient number, since it is larger than the sum of its proper divisors (629519417).

203440313143 is a wasteful number, since it uses less digits than its factorization.

203440313143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402977.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 203440313143 its reverse (341313044302), we get a palindrome (544753357445).

The spelling of 203440313143 in words is "two hundred three billion, four hundred forty million, three hundred thirteen thousand, one hundred forty-three".