1231112301 has 4 divisors (see below), whose sum is σ = 1641483072. Its totient is φ = 820741532.

The previous prime is 1231112293. The next prime is 1231112327. The reversal of 1231112301 is 1032111321.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1032111321 = 3 ⋅344037107.

It is a cyclic number.

It is not a de Polignac number, because 1231112301 - 2³ = 1231112293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231112101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205185381 + ... + 205185386.

It is an arithmetic number, because the mean of its divisors is an integer number (410370768).

Almost surely, 2^1231112301 is an apocalyptic number.

It is an amenable number.

1231112301 is a deficient number, since it is larger than the sum of its proper divisors (410370771).

1231112301 is an equidigital number, since it uses as much as digits as its factorization.

1231112301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410370770.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1231112301 is about 35087.2099346756. The cubic root of 1231112301 is about 1071.7641439820.

Adding to 1231112301 its reverse (1032111321), we get a palindrome (2263223622).

The spelling of 1231112301 in words is "one billion, two hundred thirty-one million, one hundred twelve thousand, three hundred one".