105603203231 has 4 divisors (see below), whose sum is σ = 105656086152. Its totient is φ = 105550320312.

The previous prime is 105603203219. The next prime is 105603203239. The reversal of 105603203231 is 132302306501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132302306501 = 131 ⋅1009941271.

It is a cyclic number.

It is not a de Polignac number, because 105603203231 - 2¹⁴ = 105603186847 is a prime.

It is a super-2 number, since 2×105603203231² (a number of 23 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 105603203231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105603203239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26438465 + ... + 26442458.

It is an arithmetic number, because the mean of its divisors is an integer number (26414021538).

Almost surely, 2^105603203231 is an apocalyptic number.

105603203231 is a deficient number, since it is larger than the sum of its proper divisors (52882921).

105603203231 is an equidigital number, since it uses as much as digits as its factorization.

105603203231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52882920.

The product of its (nonzero) digits is 3240, while the sum is 26.

Adding to 105603203231 its reverse (132302306501), we get a palindrome (237905509732).

The spelling of 105603203231 in words is "one hundred five billion, six hundred three million, two hundred three thousand, two hundred thirty-one".