243103431 has 16 divisors (see below), whose sum is σ = 336921984. Its totient is φ = 155782944.

The previous prime is 243103387. The next prime is 243103459. The reversal of 243103431 is 134301342.

It is not a de Polignac number, because 243103431 - 2⁹ = 243102919 is a prime.

It is a super-2 number, since 2×243103431² = 118198556327943522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243103398 and 243103407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243103481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3981 + ... + 22406.

It is an arithmetic number, because the mean of its divisors is an integer number (21057624).

Almost surely, 2^243103431 is an apocalyptic number.

243103431 is a deficient number, since it is larger than the sum of its proper divisors (93818553).

243103431 is a wasteful number, since it uses less digits than its factorization.

243103431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26510.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 243103431 is about 15591.7744660446. The cubic root of 243103431 is about 624.1136714556.

Adding to 243103431 its reverse (134301342), we get a palindrome (377404773).

The spelling of 243103431 in words is "two hundred forty-three million, one hundred three thousand, four hundred thirty-one".