31348535605 has 4 divisors (see below), whose sum is σ = 37618242732. Its totient is φ = 25078828480.

The previous prime is 31348535599. The next prime is 31348535609. The reversal of 31348535605 is 50653584313.

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 13939580356 + 17408955249 = 118066^2 + 131943^2 .

It is not a de Polignac number, because 31348535605 - 2²⁹ = 30811664693 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 (31348535609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3134853556 + ... + 3134853565.

It is an arithmetic number, because the mean of its divisors is an integer number (9404560683).

Almost surely, 2^31348535605 is an apocalyptic number.

It is an amenable number.

31348535605 is a deficient number, since it is larger than the sum of its proper divisors (6269707127).

31348535605 is an equidigital number, since it uses as much as digits as its factorization.

31348535605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6269707126.

The product of its (nonzero) digits is 648000, while the sum is 43.

The spelling of 31348535605 in words is "thirty-one billion, three hundred forty-eight million, five hundred thirty-five thousand, six hundred five".