100321201231 has 4 divisors (see below), whose sum is σ = 100678216464. Its totient is φ = 99964186000.

The previous prime is 100321201223. The next prime is 100321201259. The reversal of 100321201231 is 132102123001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132102123001 = 137 ⋅964249073.

It is a cyclic number.

It is not a de Polignac number, because 100321201231 - 2³ = 100321201223 is a prime.

It is a super-2 number, since 2×100321201231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100321204231) 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, 178507195 + ... + 178507756.

It is an arithmetic number, because the mean of its divisors is an integer number (25169554116).

Almost surely, 2^100321201231 is an apocalyptic number.

100321201231 is a deficient number, since it is larger than the sum of its proper divisors (357015233).

100321201231 is an equidigital number, since it uses as much as digits as its factorization.

100321201231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357015232.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 100321201231 its reverse (132102123001), we get a palindrome (232423324232).

The spelling of 100321201231 in words is "one hundred billion, three hundred twenty-one million, two hundred one thousand, two hundred thirty-one".