100231220031 has 8 divisors (see below), whose sum is σ = 133681616640. Its totient is φ = 66800818392.

The previous prime is 100231220021. The next prime is 100231220081. The reversal of 100231220031 is 130022132001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100231220031 - 2³⁴ = 83051350847 is a prime.

It is a super-2 number, since 2×100231220031² (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 (100231220021) 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 7 ways as a sum of consecutive naturals, for example, 4987041 + ... + 5007098.

It is an arithmetic number, because the mean of its divisors is an integer number (16710202080).

Almost surely, 2^100231220031 is an apocalyptic number.

100231220031 is a deficient number, since it is larger than the sum of its proper divisors (33450396609).

100231220031 is an equidigital number, since it uses as much as digits as its factorization.

100231220031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9997485.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 100231220031 its reverse (130022132001), we get a palindrome (230253352032).

The spelling of 100231220031 in words is "one hundred billion, two hundred thirty-one million, two hundred twenty thousand, thirty-one".