31445042200249 has 2 divisors, whose sum is σ = 31445042200250. Its totient is φ = 31445042200248.

The previous prime is 31445042200237. The next prime is 31445042200321. The reversal of 31445042200249 is 94200224054413.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30756374580649 + 688667619600 = 5545843^2 + 829860^2 .

It is an emirp because it is prime and its reverse (94200224054413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31445042200249 - 2⁹ = 31445042199737 is a prime.

It is not a weakly prime, because it can be changed into another prime (31445042204249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15722521100124 + 15722521100125.

It is an arithmetic number, because the mean of its divisors is an integer number (15722521100125).

Almost surely, 2^{31445042200249} is an apocalyptic number.

It is an amenable number.

31445042200249 is a deficient number, since it is larger than the sum of its proper divisors (1).

31445042200249 is an equidigital number, since it uses as much as digits as its factorization.

31445042200249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 276480, while the sum is 40.

The spelling of 31445042200249 in words is "thirty-one trillion, four hundred forty-five billion, forty-two million, two hundred thousand, two hundred forty-nine".