31302232324213 has 2 divisors, whose sum is σ = 31302232324214. Its totient is φ = 31302232324212.

The previous prime is 31302232324211. The next prime is 31302232324241. The reversal of 31302232324213 is 31242323220313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27994860894289 + 3307371429924 = 5291017^2 + 1818618^2 .

It is a cyclic number.

It is not a de Polignac number, because 31302232324213 - 2¹ = 31302232324211 is a prime.

Together with 31302232324211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31302232324211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15651116162106 + 15651116162107.

It is an arithmetic number, because the mean of its divisors is an integer number (15651116162107).

Almost surely, 2^{31302232324213} is an apocalyptic number.

It is an amenable number.

31302232324213 is a deficient number, since it is larger than the sum of its proper divisors (1).

31302232324213 is an equidigital number, since it uses as much as digits as its factorization.

31302232324213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 31302232324213 its reverse (31242323220313), we get a palindrome (62544555544526).

The spelling of 31302232324213 in words is "thirty-one trillion, three hundred two billion, two hundred thirty-two million, three hundred twenty-four thousand, two hundred thirteen".