100231311231 has 24 divisors (see below), whose sum is σ = 151409887200. Its totient is φ = 63773208576.

The previous prime is 100231311181. The next prime is 100231311247. The reversal of 100231311231 is 132113132001.

100231311231 is a `hidden beast` number, since 100 + 23 + 1 + 311 + 231 = 666.

It is not a de Polignac number, because 100231311231 - 2¹¹ = 100231309183 is a prime.

It is a super-2 number, since 2×100231311231² (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 (100231311251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 446266 + ... + 632151.

It is an arithmetic number, because the mean of its divisors is an integer number (6308745300).

Almost surely, 2^100231311231 is an apocalyptic number.

100231311231 is a deficient number, since it is larger than the sum of its proper divisors (51178575969).

100231311231 is a wasteful number, since it uses less digits than its factorization.

100231311231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078895 (or 1078892 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 100231311231 its reverse (132113132001), we get a palindrome (232344443232).

The spelling of 100231311231 in words is "one hundred billion, two hundred thirty-one million, three hundred eleven thousand, two hundred thirty-one".