31014135405509 has 2 divisors, whose sum is σ = 31014135405510. Its totient is φ = 31014135405508.

The previous prime is 31014135405481. The next prime is 31014135405569. The reversal of 31014135405509 is 90550453141013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20558470881025 + 10455664524484 = 4534145^2 + 3233522^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31014135405509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31014135405569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15507067702754 + 15507067702755.

It is an arithmetic number, because the mean of its divisors is an integer number (15507067702755).

Almost surely, 2^{31014135405509} is an apocalyptic number.

It is an amenable number.

31014135405509 is a deficient number, since it is larger than the sum of its proper divisors (1).

31014135405509 is an equidigital number, since it uses as much as digits as its factorization.

31014135405509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162000, while the sum is 41.

The spelling of 31014135405509 in words is "thirty-one trillion, fourteen billion, one hundred thirty-five million, four hundred five thousand, five hundred nine".