31113232120001 has 4 divisors (see below), whose sum is σ = 31118101938900. Its totient is φ = 31108362301104.

The previous prime is 31113232119881. The next prime is 31113232120049. The reversal of 31113232120001 is 10002123231113.

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 190724358400 + 30922507761601 = 436720^2 + 5560801^2 .

It is a cyclic number.

It is not a de Polignac number, because 31113232120001 - 2¹⁴ = 31113232103617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31113232120501) 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, 2434899866 + ... + 2434912643.

It is an arithmetic number, because the mean of its divisors is an integer number (7779525484725).

Almost surely, 2^{31113232120001} is an apocalyptic number.

It is an amenable number.

31113232120001 is a deficient number, since it is larger than the sum of its proper divisors (4869818899).

31113232120001 is an equidigital number, since it uses as much as digits as its factorization.

31113232120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4869818898.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 31113232120001 its reverse (10002123231113), we get a palindrome (41115355351114).

The spelling of 31113232120001 in words is "thirty-one trillion, one hundred thirteen billion, two hundred thirty-two million, one hundred twenty thousand, one".