203144431 has 8 divisors (see below), whose sum is σ = 234464544. Its totient is φ = 172399200.

The previous prime is 203144429. The next prime is 203144453. The reversal of 203144431 is 134441302.

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 203144431 - 2¹ = 203144429 is a prime.

It is a super-2 number, since 2×203144431² = 82535319692627522, which 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 (203144401) 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, 142960 + ... + 144373.

It is an arithmetic number, because the mean of its divisors is an integer number (29308068).

Almost surely, 2^203144431 is an apocalyptic number.

203144431 is a deficient number, since it is larger than the sum of its proper divisors (31320113).

203144431 is a wasteful number, since it uses less digits than its factorization.

203144431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287441.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 203144431 is about 14252.8744820124. The cubic root of 203144431 is about 587.8524154492.

Adding to 203144431 its reverse (134441302), we get a palindrome (337585733).

The spelling of 203144431 in words is "two hundred three million, one hundred forty-four thousand, four hundred thirty-one".