31301232222313 has 2 divisors, whose sum is σ = 31301232222314. Its totient is φ = 31301232222312.

The previous prime is 31301232222257. The next prime is 31301232222341. The reversal of 31301232222313 is 31322223210313.

It is a happy number.

It is an a-pointer prime, because the next prime (31301232222341) can be obtained adding 31301232222313 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25363179498969 + 5938052723344 = 5036187^2 + 2436812^2 .

It is a cyclic number.

It is not a de Polignac number, because 31301232222313 - 2⁹ = 31301232221801 is a prime.

It is not a weakly prime, because it can be changed into another prime (31301232222343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15650616111156 + 15650616111157.

It is an arithmetic number, because the mean of its divisors is an integer number (15650616111157).

Almost surely, 2^{31301232222313} is an apocalyptic number.

It is an amenable number.

31301232222313 is a deficient number, since it is larger than the sum of its proper divisors (1).

31301232222313 is an equidigital number, since it uses as much as digits as its factorization.

31301232222313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 31301232222313 its reverse (31322223210313), we get a palindrome (62623455432626).

The spelling of 31301232222313 in words is "thirty-one trillion, three hundred one billion, two hundred thirty-two million, two hundred twenty-two thousand, three hundred thirteen".