31340444189 has 2 divisors, whose sum is σ = 31340444190. Its totient is φ = 31340444188.

The previous prime is 31340444183. The next prime is 31340444243. The reversal of 31340444189 is 98144404313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26061259225 + 5279184964 = 161435^2 + 72658^2 .

It is a cyclic number.

It is not a de Polignac number, because 31340444189 - 2¹⁶ = 31340378653 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31340444183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15670222094 + 15670222095.

It is an arithmetic number, because the mean of its divisors is an integer number (15670222095).

Almost surely, 2^31340444189 is an apocalyptic number.

It is an amenable number.

31340444189 is a deficient number, since it is larger than the sum of its proper divisors (1).

31340444189 is an equidigital number, since it uses as much as digits as its factorization.

31340444189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 41.

The spelling of 31340444189 in words is "thirty-one billion, three hundred forty million, four hundred forty-four thousand, one hundred eighty-nine".