31233013123213 has 8 divisors (see below), whose sum is σ = 34072497819360. Its totient is φ = 28393548404880.

The previous prime is 31233013123201. The next prime is 31233013123223. The reversal of 31233013123213 is 31232131033213.

It is a happy number.

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 31233013123213 - 2²⁹ = 31232476252301 is a prime.

It is a super-2 number, since 2×31233013123213² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31233013123223) 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, 1626823 + ... + 8069236.

It is an arithmetic number, because the mean of its divisors is an integer number (4259062227420).

Almost surely, 2^{31233013123213} is an apocalyptic number.

It is an amenable number.

31233013123213 is a deficient number, since it is larger than the sum of its proper divisors (2839484696147).

31233013123213 is a wasteful number, since it uses less digits than its factorization.

31233013123213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9988907.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 31233013123213 its reverse (31232131033213), we get a palindrome (62465144156426).

Subtracting from 31233013123213 its reverse (31232131033213), we obtain a square (882090000 = 29700²).

The spelling of 31233013123213 in words is "thirty-one trillion, two hundred thirty-three billion, thirteen million, one hundred twenty-three thousand, two hundred thirteen".