31312213231013 has 8 divisors (see below), whose sum is σ = 36786376383456. Its totient is φ = 26275983130800.

The previous prime is 31312213230941. The next prime is 31312213231063. The reversal of 31312213231013 is 31013231221313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31312213231013 - 2⁸ = 31312213230757 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 (31312213231063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109483262903 + ... + 109483263188.

It is an arithmetic number, because the mean of its divisors is an integer number (4598297047932).

Almost surely, 2^{31312213231013} is an apocalyptic number.

It is an amenable number.

31312213231013 is a deficient number, since it is larger than the sum of its proper divisors (5474163152443).

31312213231013 is a wasteful number, since it uses less digits than its factorization.

31312213231013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218966526115.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 31312213231013 its reverse (31013231221313), we get a palindrome (62325444452326).

The spelling of 31312213231013 in words is "thirty-one trillion, three hundred twelve billion, two hundred thirteen million, two hundred thirty-one thousand, thirteen".