31135013305 has 16 divisors (see below), whose sum is σ = 40764711744. Its totient is φ = 22640230080.

The previous prime is 31135013281. The next prime is 31135013381. The reversal of 31135013305 is 50331053113.

It is not a de Polignac number, because 31135013305 - 2³¹ = 28987529657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31135013305.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 359287 + ... + 437443.

It is an arithmetic number, because the mean of its divisors is an integer number (2547794484).

Almost surely, 2^31135013305 is an apocalyptic number.

It is an amenable number.

31135013305 is a deficient number, since it is larger than the sum of its proper divisors (9629698439).

31135013305 is a wasteful number, since it uses less digits than its factorization.

31135013305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85416.

The product of its (nonzero) digits is 2025, while the sum is 25.

Adding to 31135013305 its reverse (50331053113), we get a palindrome (81466066418).

The spelling of 31135013305 in words is "thirty-one billion, one hundred thirty-five million, thirteen thousand, three hundred five".