31430334112405 has 8 divisors (see below), whose sum is σ = 37911822702552. Its totient is φ = 25013986111488.

The previous prime is 31430334112403. The next prime is 31430334112433. The reversal of 31430334112405 is 50421143303413.

It can be written as a sum of positive squares in 4 ways, for example, as 4671377627569 + 26758956484836 = 2161337^2 + 5172906^2 .

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 31430334112405 - 2¹ = 31430334112403 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 (31430334112403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16285146244 + ... + 16285148173.

It is an arithmetic number, because the mean of its divisors is an integer number (4738977837819).

Almost surely, 2^{31430334112405} is an apocalyptic number.

It is an amenable number.

31430334112405 is a deficient number, since it is larger than the sum of its proper divisors (6481488590147).

31430334112405 is a wasteful number, since it uses less digits than its factorization.

31430334112405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32570294615.

The product of its (nonzero) digits is 51840, while the sum is 34.

Adding to 31430334112405 its reverse (50421143303413), we get a palindrome (81851477415818).

The spelling of 31430334112405 in words is "thirty-one trillion, four hundred thirty billion, three hundred thirty-four million, one hundred twelve thousand, four hundred five".