31122233000213 has 4 divisors (see below), whose sum is σ = 31174715687148. Its totient is φ = 31069750313280.

The previous prime is 31122233000189. The next prime is 31122233000231. The reversal of 31122233000213 is 31200033222113.

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 22104356131729 + 9017876868484 = 4701527^2 + 3002978^2 .

It is a cyclic number.

It is not a de Polignac number, because 31122233000213 - 2²⁰ = 31122231951637 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 (31122233009213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26241342578 + ... + 26241343763.

It is an arithmetic number, because the mean of its divisors is an integer number (7793678921787).

Almost surely, 2^{31122233000213} is an apocalyptic number.

It is an amenable number.

31122233000213 is a deficient number, since it is larger than the sum of its proper divisors (52482686935).

31122233000213 is an equidigital number, since it uses as much as digits as its factorization.

31122233000213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52482686934.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31122233000213 its reverse (31200033222113), we get a palindrome (62322266222326).

The spelling of 31122233000213 in words is "thirty-one trillion, one hundred twenty-two billion, two hundred thirty-three million, two hundred thirteen", and thus it is an aban number.