100021503231 has 24 divisors (see below), whose sum is σ = 155608493040. Its totient is φ = 61543984896.

The previous prime is 100021503223. The next prime is 100021503233. The reversal of 100021503231 is 132305120001.

It is not a de Polignac number, because 100021503231 - 2³ = 100021503223 is a prime.

It is a super-2 number, since 2×100021503231² (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 (100021503233) 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 23 ways as a sum of consecutive naturals, for example, 967420 + ... + 1065806.

It is an arithmetic number, because the mean of its divisors is an integer number (6483687210).

Almost surely, 2^100021503231 is an apocalyptic number.

100021503231 is a deficient number, since it is larger than the sum of its proper divisors (55586989809).

100021503231 is a wasteful number, since it uses less digits than its factorization.

100021503231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107095 (or 107092 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

Adding to 100021503231 its reverse (132305120001), we get a palindrome (232326623232).

The spelling of 100021503231 in words is "one hundred billion, twenty-one million, five hundred three thousand, two hundred thirty-one".