331131211121213 has 16 divisors (see below), whose sum is σ = 335694030810432. Its totient is φ = 326582092080000.

The previous prime is 331131211121177. The next prime is 331131211121267. The reversal of 331131211121213 is 312121112131133.

It is a cyclic number.

It is not a de Polignac number, because 331131211121213 - 2¹⁶ = 331131211055677 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 (331131210121213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1153700183 + ... + 1153987163.

It is an arithmetic number, because the mean of its divisors is an integer number (20980876925652).

Almost surely, 2^{331131211121213} is an apocalyptic number.

It is an amenable number.

331131211121213 is a deficient number, since it is larger than the sum of its proper divisors (4562819689219).

331131211121213 is a wasteful number, since it uses less digits than its factorization.

331131211121213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310796.

The product of its digits is 648, while the sum is 26.

Adding to 331131211121213 its reverse (312121112131133), we get a palindrome (643252323252346).

The spelling of 331131211121213 in words is "three hundred thirty-one trillion, one hundred thirty-one billion, two hundred eleven million, one hundred twenty-one thousand, two hundred thirteen".