31531363459 has 2 divisors, whose sum is σ = 31531363460. Its totient is φ = 31531363458.

The previous prime is 31531363441. The next prime is 31531363471. The reversal of 31531363459 is 95436313513.

It is a strong prime.

It is an emirp because it is prime and its reverse (95436313513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31531363459 - 2¹⁷ = 31531232387 is a prime.

It is not a weakly prime, because it can be changed into another prime (31531363439) 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, 15765681729 + 15765681730.

It is an arithmetic number, because the mean of its divisors is an integer number (15765681730).

Almost surely, 2^31531363459 is an apocalyptic number.

31531363459 is a deficient number, since it is larger than the sum of its proper divisors (1).

31531363459 is an equidigital number, since it uses as much as digits as its factorization.

31531363459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 437400, while the sum is 43.

The spelling of 31531363459 in words is "thirty-one billion, five hundred thirty-one million, three hundred sixty-three thousand, four hundred fifty-nine".