31530377005 has 8 divisors (see below), whose sum is σ = 38171288952. Its totient is φ = 25001077248.

The previous prime is 31530376993. The next prime is 31530377009. The reversal of 31530377005 is 50077303513.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 632120164 + 30898256841 = 25142^2 + 175779^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31530377005 - 2¹¹ = 31530374957 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 (31530377009) 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 7 ways as a sum of consecutive naturals, for example, 27902424 + ... + 27903553.

It is an arithmetic number, because the mean of its divisors is an integer number (4771411119).

Almost surely, 2^31530377005 is an apocalyptic number.

It is an amenable number.

31530377005 is a deficient number, since it is larger than the sum of its proper divisors (6640911947).

31530377005 is a wasteful number, since it uses less digits than its factorization.

31530377005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55806095.

The product of its (nonzero) digits is 33075, while the sum is 34.

The spelling of 31530377005 in words is "thirty-one billion, five hundred thirty million, three hundred seventy-seven thousand, five".