31222003313 has 2 divisors, whose sum is σ = 31222003314. Its totient is φ = 31222003312.

The previous prime is 31222003301. The next prime is 31222003339. The reversal of 31222003313 is 31330022213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31220062864 + 1940449 = 176692^2 + 1393^2 .

It is a cyclic number.

It is not a de Polignac number, because 31222003313 - 2⁴ = 31222003297 is a prime.

It is not a weakly prime, because it can be changed into another prime (31222003513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15611001656 + 15611001657.

It is an arithmetic number, because the mean of its divisors is an integer number (15611001657).

Almost surely, 2^31222003313 is an apocalyptic number.

It is an amenable number.

31222003313 is a deficient number, since it is larger than the sum of its proper divisors (1).

31222003313 is an equidigital number, since it uses as much as digits as its factorization.

31222003313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 31222003313 its reverse (31330022213), we get a palindrome (62552025526).

The spelling of 31222003313 in words is "thirty-one billion, two hundred twenty-two million, three thousand, three hundred thirteen".