31463491069 has 2 divisors, whose sum is σ = 31463491070. Its totient is φ = 31463491068.

The previous prime is 31463491067. The next prime is 31463491093. The reversal of 31463491069 is 96019436413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17672511844 + 13790979225 = 132938^2 + 117435^2 .

It is an emirp because it is prime and its reverse (96019436413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31463491069 - 2¹ = 31463491067 is a prime.

It is a super-2 number, since 2×31463491069² (a number of 22 digits) contains 22 as substring.

Together with 31463491067, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31463491063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15731745534 + 15731745535.

It is an arithmetic number, because the mean of its divisors is an integer number (15731745535).

Almost surely, 2^31463491069 is an apocalyptic number.

It is an amenable number.

31463491069 is a deficient number, since it is larger than the sum of its proper divisors (1).

31463491069 is an equidigital number, since it uses as much as digits as its factorization.

31463491069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904, while the sum is 46.

The spelling of 31463491069 in words is "thirty-one billion, four hundred sixty-three million, four hundred ninety-one thousand, sixty-nine".