31014135405481 has 2 divisors, whose sum is σ = 31014135405482. Its totient is φ = 31014135405480.

The previous prime is 31014135405457. The next prime is 31014135405509. The reversal of 31014135405481 is 18450453141013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29457919075225 + 1556216330256 = 5427515^2 + 1247484^2 .

It is an emirp because it is prime and its reverse (18450453141013) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31014135405481 - 2²⁵ = 31014101851049 is a prime.

It is a super-2 number, since 2×31014135405481² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31014135403481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15507067702740 + 15507067702741.

It is an arithmetic number, because the mean of its divisors is an integer number (15507067702741).

Almost surely, 2^{31014135405481} is an apocalyptic number.

It is an amenable number.

31014135405481 is a deficient number, since it is larger than the sum of its proper divisors (1).

31014135405481 is an equidigital number, since it uses as much as digits as its factorization.

31014135405481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 115200, while the sum is 40.

Adding to 31014135405481 its reverse (18450453141013), we get a palindrome (49464588546494).

The spelling of 31014135405481 in words is "thirty-one trillion, fourteen billion, one hundred thirty-five million, four hundred five thousand, four hundred eighty-one".