31232110212313 has 4 divisors (see below), whose sum is σ = 31232445223588. Its totient is φ = 31231775201040.

The previous prime is 31232110212287. The next prime is 31232110212353. The reversal of 31232110212313 is 31321201123213.

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 30390170001984 + 841940210329 = 5512728^2 + 917573^2 .

It is a cyclic number.

It is not a de Polignac number, because 31232110212313 - 2²⁹ = 31231573341401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31232110212353) 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, 167365758 + ... + 167552263.

It is an arithmetic number, because the mean of its divisors is an integer number (7808111305897).

Almost surely, 2^{31232110212313} is an apocalyptic number.

It is an amenable number.

31232110212313 is a deficient number, since it is larger than the sum of its proper divisors (335011275).

31232110212313 is an equidigital number, since it uses as much as digits as its factorization.

31232110212313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335011274.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 31232110212313 its reverse (31321201123213), we get a palindrome (62553311335526).

The spelling of 31232110212313 in words is "thirty-one trillion, two hundred thirty-two billion, one hundred ten million, two hundred twelve thousand, three hundred thirteen".