31044201389 has 2 divisors, whose sum is σ = 31044201390. Its totient is φ = 31044201388.

The previous prime is 31044201373. The next prime is 31044201469. The reversal of 31044201389 is 98310244013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25064272489 + 5979928900 = 158317^2 + 77330^2 .

It is a cyclic number.

It is not a de Polignac number, because 31044201389 - 2⁴ = 31044201373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31044201359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15522100694 + 15522100695.

It is an arithmetic number, because the mean of its divisors is an integer number (15522100695).

Almost surely, 2^31044201389 is an apocalyptic number.

It is an amenable number.

31044201389 is a deficient number, since it is larger than the sum of its proper divisors (1).

31044201389 is an equidigital number, since it uses as much as digits as its factorization.

31044201389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 31044201389 in words is "thirty-one billion, forty-four million, two hundred one thousand, three hundred eighty-nine".