3181438103 has 4 divisors (see below), whose sum is σ = 3233592888. Its totient is φ = 3129283320.

The previous prime is 3181438093. The next prime is 3181438133. The reversal of 3181438103 is 3018341813.

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 3181438103 - 2¹² = 3181434007 is a prime.

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 3181438103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3181438133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26077301 + ... + 26077422.

It is an arithmetic number, because the mean of its divisors is an integer number (808398222).

Almost surely, 2^3181438103 is an apocalyptic number.

3181438103 is a deficient number, since it is larger than the sum of its proper divisors (52154785).

3181438103 is an equidigital number, since it uses as much as digits as its factorization.

3181438103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52154784.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 3181438103 is about 56404.2383425217. The cubic root of 3181438103 is about 1470.7577969203.

Adding to 3181438103 its reverse (3018341813), we get a palindrome (6199779916).

The spelling of 3181438103 in words is "three billion, one hundred eighty-one million, four hundred thirty-eight thousand, one hundred three".