31221033012213 has 8 divisors (see below), whose sum is σ = 45412411654176. Its totient is φ = 18921838189200.

The previous prime is 31221033012199. The next prime is 31221033012223.

31221033012213 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 31221033012213 - 2⁶ = 31221033012149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31221033012223) 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, 473045954698 + ... + 473045954763.

It is an arithmetic number, because the mean of its divisors is an integer number (5676551456772).

Almost surely, 2^{31221033012213} is an apocalyptic number.

31221033012213 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31221033012213 is a deficient number, since it is larger than the sum of its proper divisors (14191378641963).

31221033012213 is a wasteful number, since it uses less digits than its factorization.

31221033012213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946091909475.

The product of its (nonzero) digits is 1296, while the sum is 24.

It can be divided in two parts, 3122103 and 3012213, that added together give a palindrome (6134316).

The spelling of 31221033012213 in words is "thirty-one trillion, two hundred twenty-one billion, thirty-three million, twelve thousand, two hundred thirteen".