31344410243389 has 2 divisors, whose sum is σ = 31344410243390. Its totient is φ = 31344410243388.

The previous prime is 31344410243347. The next prime is 31344410243407. The reversal of 31344410243389 is 98334201444313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27716718620889 + 3627691622500 = 5264667^2 + 1904650^2 .

It is an emirp because it is prime and its reverse (98334201444313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31344410243389 - 2¹¹ = 31344410241341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31344410243189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15672205121694 + 15672205121695.

It is an arithmetic number, because the mean of its divisors is an integer number (15672205121695).

Almost surely, 2^{31344410243389} is an apocalyptic number.

It is an amenable number.

31344410243389 is a deficient number, since it is larger than the sum of its proper divisors (1).

31344410243389 is an equidigital number, since it uses as much as digits as its factorization.

31344410243389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2985984, while the sum is 49.

The spelling of 31344410243389 in words is "thirty-one trillion, three hundred forty-four billion, four hundred ten million, two hundred forty-three thousand, three hundred eighty-nine".