31456530060013 has 4 divisors (see below), whose sum is σ = 31458575762460. Its totient is φ = 31454484357568.

The previous prime is 31456530059917. The next prime is 31456530060031. The reversal of 31456530060013 is 31006003565413.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29556152014249 + 1900378045764 = 5436557^2 + 1378542^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31456530060013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31456530060083) 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 in 3 ways as a sum of consecutive naturals, for example, 1022828158 + ... + 1022858911.

It is an arithmetic number, because the mean of its divisors is an integer number (7864643940615).

Almost surely, 2^{31456530060013} is an apocalyptic number.

It is an amenable number.

31456530060013 is a deficient number, since it is larger than the sum of its proper divisors (2045702447).

31456530060013 is a wasteful number, since it uses less digits than its factorization.

31456530060013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2045702446.

The product of its (nonzero) digits is 97200, while the sum is 37.

The spelling of 31456530060013 in words is "thirty-one trillion, four hundred fifty-six billion, five hundred thirty million, sixty thousand, thirteen".