2131231001101 has 2 divisors, whose sum is σ = 2131231001102. Its totient is φ = 2131231001100.

The previous prime is 2131231001099. The next prime is 2131231001147. The reversal of 2131231001101 is 1011001321312.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1321869875076 + 809361126025 = 1149726^2 + 899645^2 .

It is a cyclic number.

It is not a de Polignac number, because 2131231001101 - 2¹ = 2131231001099 is a prime.

Together with 2131231001099, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2131231001401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065615500550 + 1065615500551.

It is an arithmetic number, because the mean of its divisors is an integer number (1065615500551).

Almost surely, 2^{2131231001101} is an apocalyptic number.

It is an amenable number.

2131231001101 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131231001101 is an equidigital number, since it uses as much as digits as its factorization.

2131231001101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 2131231001101 its reverse (1011001321312), we get a palindrome (3142232322413).

The spelling of 2131231001101 in words is "two trillion, one hundred thirty-one billion, two hundred thirty-one million, one thousand, one hundred one".