31221044012213 has 8 divisors (see below), whose sum is σ = 34103611153920. Its totient is φ = 28345858606080.

The previous prime is 31221044012177. The next prime is 31221044012251.

It is a happy number.

31221044012213 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31221044012213 - 2¹² = 31221044008117 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31221044012113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1845425045 + ... + 1845441962.

It is an arithmetic number, because the mean of its divisors is an integer number (4262951394240).

Almost surely, 2^{31221044012213} is an apocalyptic number.

It is an amenable number.

31221044012213 is a deficient number, since it is larger than the sum of its proper divisors (2882567141707).

31221044012213 is a wasteful number, since it uses less digits than its factorization.

31221044012213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3690867787.

The product of its (nonzero) digits is 2304, while the sum is 26.

It can be divided in two parts, 3122104 and 4012213, that added together give a palindrome (7134317).

The spelling of 31221044012213 in words is "thirty-one trillion, two hundred twenty-one billion, forty-four million, twelve thousand, two hundred thirteen".