1231230110101 has 4 divisors (see below), whose sum is σ = 1231601077600. Its totient is φ = 1230859142604.

The previous prime is 1231230110063. The next prime is 1231230110221. The reversal of 1231230110101 is 1010110321321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1231230110101 - 2²⁹ = 1230693239189 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 (1231230110401) 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, 185478771 + ... + 185485408.

It is an arithmetic number, because the mean of its divisors is an integer number (307900269400).

Almost surely, 2^{1231230110101} is an apocalyptic number.

It is an amenable number.

1231230110101 is a deficient number, since it is larger than the sum of its proper divisors (370967499).

1231230110101 is an equidigital number, since it uses as much as digits as its factorization.

1231230110101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370967498.

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

Adding to 1231230110101 its reverse (1010110321321), we get a palindrome (2241340431422).

The spelling of 1231230110101 in words is "one trillion, two hundred thirty-one billion, two hundred thirty million, one hundred ten thousand, one hundred one".