331220211320213 has 16 divisors (see below), whose sum is σ = 342142996346880. Its totient is φ = 320403031056000.

The previous prime is 331220211320183. The next prime is 331220211320333. The reversal of 331220211320213 is 312023112022133.

It is a cyclic number.

It is not a de Polignac number, because 331220211320213 - 2¹² = 331220211316117 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 (331220210320213) 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, 284153 + ... + 25739486.

It is an arithmetic number, because the mean of its divisors is an integer number (21383937271680).

Almost surely, 2^{331220211320213} is an apocalyptic number.

It is an amenable number.

331220211320213 is a deficient number, since it is larger than the sum of its proper divisors (10922785026667).

331220211320213 is a wasteful number, since it uses less digits than its factorization.

331220211320213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26025668.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 331220211320213 its reverse (312023112022133), we get a palindrome (643243323342346).

The spelling of 331220211320213 in words is "three hundred thirty-one trillion, two hundred twenty billion, two hundred eleven million, three hundred twenty thousand, two hundred thirteen".