31332113213 has 8 divisors (see below), whose sum is σ = 32599891800. Its totient is φ = 30076825408.

The previous prime is 31332113207. The next prime is 31332113221. The reversal of 31332113213 is 31231123313.

It can be written as a sum of positive squares in 4 ways, for example, as 21633408889 + 9698704324 = 147083^2 + 98482^2 .

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 31332113213 - 2¹² = 31332109117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31332113273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3117578 + ... + 3127611.

It is an arithmetic number, because the mean of its divisors is an integer number (4074986475).

Almost surely, 2^31332113213 is an apocalyptic number.

It is an amenable number.

31332113213 is a deficient number, since it is larger than the sum of its proper divisors (1267778587).

31332113213 is a wasteful number, since it uses less digits than its factorization.

31332113213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6245391.

The product of its digits is 972, while the sum is 23.

Adding to 31332113213 its reverse (31231123313), we get a palindrome (62563236526).

The spelling of 31332113213 in words is "thirty-one billion, three hundred thirty-two million, one hundred thirteen thousand, two hundred thirteen".