31441000639 has 2 divisors, whose sum is σ = 31441000640. Its totient is φ = 31441000638.

The previous prime is 31441000477. The next prime is 31441000663. The reversal of 31441000639 is 93600014413.

It is a strong prime.

It is an emirp because it is prime and its reverse (93600014413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31441000639 - 2¹³ = 31440992447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31441000639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31441000039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15720500319 + 15720500320.

It is an arithmetic number, because the mean of its divisors is an integer number (15720500320).

Almost surely, 2^31441000639 is an apocalyptic number.

31441000639 is a deficient number, since it is larger than the sum of its proper divisors (1).

31441000639 is an equidigital number, since it uses as much as digits as its factorization.

31441000639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 31441000639 in words is "thirty-one billion, four hundred forty-one million, six hundred thirty-nine", and thus it is an aban number.