31220052133349 has 2 divisors, whose sum is σ = 31220052133350. Its totient is φ = 31220052133348.

The previous prime is 31220052133327. The next prime is 31220052133357. The reversal of 31220052133349 is 94333125002213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18723084772324 + 12496967361025 = 4327018^2 + 3535105^2 .

It is a cyclic number.

It is not a de Polignac number, because 31220052133349 - 2⁴⁴ = 13627866088933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31220052130349) 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 as a sum of consecutive naturals, namely, 15610026066674 + 15610026066675.

It is an arithmetic number, because the mean of its divisors is an integer number (15610026066675).

Almost surely, 2^{31220052133349} is an apocalyptic number.

It is an amenable number.

31220052133349 is a deficient number, since it is larger than the sum of its proper divisors (1).

31220052133349 is an equidigital number, since it uses as much as digits as its factorization.

31220052133349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 38.

The spelling of 31220052133349 in words is "thirty-one trillion, two hundred twenty billion, fifty-two million, one hundred thirty-three thousand, three hundred forty-nine".