243203114431 has 8 divisors (see below), whose sum is σ = 245143148544. Its totient is φ = 241263471960.

The previous prime is 243203114417. The next prime is 243203114471. The reversal of 243203114431 is 134411302342.

It is a happy number.

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-243203114431 is a prime.

It is a super-2 number, since 2×243203114431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 243203114431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243203114471) 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, 1219356 + ... + 1404718.

It is an arithmetic number, because the mean of its divisors is an integer number (30642893568).

Almost surely, 2^243203114431 is an apocalyptic number.

243203114431 is a deficient number, since it is larger than the sum of its proper divisors (1940034113).

243203114431 is a wasteful number, since it uses less digits than its factorization.

243203114431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195821.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 243203114431 its reverse (134411302342), we get a palindrome (377614416773).

The spelling of 243203114431 in words is "two hundred forty-three billion, two hundred three million, one hundred fourteen thousand, four hundred thirty-one".