31553253222137 has 2 divisors, whose sum is σ = 31553253222138. Its totient is φ = 31553253222136.

The previous prime is 31553253221923. The next prime is 31553253222191. The reversal of 31553253222137 is 73122235235513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22877701228096 + 8675551994041 = 4783064^2 + 2945429^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31553253222137 is a prime.

It is not a weakly prime, because it can be changed into another prime (31553253224137) 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, 15776626611068 + 15776626611069.

It is an arithmetic number, because the mean of its divisors is an integer number (15776626611069).

Almost surely, 2^{31553253222137} is an apocalyptic number.

It is an amenable number.

31553253222137 is a deficient number, since it is larger than the sum of its proper divisors (1).

31553253222137 is an equidigital number, since it uses as much as digits as its factorization.

31553253222137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1134000, while the sum is 44.

The spelling of 31553253222137 in words is "thirty-one trillion, five hundred fifty-three billion, two hundred fifty-three million, two hundred twenty-two thousand, one hundred thirty-seven".