231011012101 has 4 divisors (see below), whose sum is σ = 238976909100. Its totient is φ = 223045115104.

The previous prime is 231011012093. The next prime is 231011012119. The reversal of 231011012101 is 101210110132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 156550792225 + 74460219876 = 395665^2 + 272874^2 .

It is a cyclic number.

It is not a de Polignac number, because 231011012101 - 2³ = 231011012093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231011012131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3982948456 + ... + 3982948513.

It is an arithmetic number, because the mean of its divisors is an integer number (59744227275).

Almost surely, 2^231011012101 is an apocalyptic number.

It is an amenable number.

231011012101 is a deficient number, since it is larger than the sum of its proper divisors (7965896999).

231011012101 is an equidigital number, since it uses as much as digits as its factorization.

231011012101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7965896998.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 231011012101 its reverse (101210110132), we get a palindrome (332221122233).

The spelling of 231011012101 in words is "two hundred thirty-one billion, eleven million, twelve thousand, one hundred one".