331000121233213 has 4 divisors (see below), whose sum is σ = 331272998498428. Its totient is φ = 330727243968000.

The previous prime is 331000121233189. The next prime is 331000121233253. The reversal of 331000121233213 is 312332121000133.

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 39425815884004 + 291574305349209 = 6278998^2 + 17075547^2 .

It is a cyclic number.

It is not a de Polignac number, because 331000121233213 - 2³³ = 330991531298621 is a prime.

It is a super-2 number, since 2×331000121233213² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331000121233253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136438630788 + ... + 136438633213.

It is an arithmetic number, because the mean of its divisors is an integer number (82818249624607).

Almost surely, 2^{331000121233213} is an apocalyptic number.

It is an amenable number.

331000121233213 is a deficient number, since it is larger than the sum of its proper divisors (272877265215).

331000121233213 is a wasteful number, since it uses less digits than its factorization.

331000121233213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272877265214.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 331000121233213 its reverse (312332121000133), we get a palindrome (643332242233346).

The spelling of 331000121233213 in words is "three hundred thirty-one trillion, one hundred twenty-one million, two hundred thirty-three thousand, two hundred thirteen".