31313200023213 has 16 divisors (see below), whose sum is σ = 42286590443520. Its totient is φ = 20607727695984.

The previous prime is 31313200023151. The next prime is 31313200023221. The reversal of 31313200023213 is 31232000231313.

It is not a de Polignac number, because 31313200023213 - 2¹⁰ = 31313200022189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31313200025213) 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, 9792181 + ... + 12590202.

It is an arithmetic number, because the mean of its divisors is an integer number (2642911902720).

Almost surely, 2^{31313200023213} is an apocalyptic number.

It is an amenable number.

31313200023213 is a deficient number, since it is larger than the sum of its proper divisors (10973390420307).

31313200023213 is a wasteful number, since it uses less digits than its factorization.

31313200023213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22388368.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 31313200023213 its reverse (31232000231313), we get a palindrome (62545200254526).

The spelling of 31313200023213 in words is "thirty-one trillion, three hundred thirteen billion, two hundred million, twenty-three thousand, two hundred thirteen".