100103221431 has 12 divisors (see below), whose sum is σ = 147321722808. Its totient is φ = 65476320624.

The previous prime is 100103221357. The next prime is 100103221469. The reversal of 100103221431 is 134122301001.

100103221431 is a `hidden beast` number, since 1 + 0 + 0 + 10 + 3 + 221 + 431 = 666.

It is not a de Polignac number, because 100103221431 - 2¹⁰ = 100103220407 is a prime.

It is a super-2 number, since 2×100103221431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100103221531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104929525 + ... + 104930478.

It is an arithmetic number, because the mean of its divisors is an integer number (12276810234).

Almost surely, 2^100103221431 is an apocalyptic number.

100103221431 is a deficient number, since it is larger than the sum of its proper divisors (47218501377).

100103221431 is a wasteful number, since it uses less digits than its factorization.

100103221431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209860062 (or 209860059 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 100103221431 its reverse (134122301001), we get a palindrome (234225522432).

The spelling of 100103221431 in words is "one hundred billion, one hundred three million, two hundred twenty-one thousand, four hundred thirty-one".