31430640405535 has 64 divisors (see below), whose sum is σ = 46017289912320. Its totient is φ = 20155028549760.

The previous prime is 31430640405533. The next prime is 31430640405539. The reversal of 31430640405535 is 53550404603413.

It is not a de Polignac number, because 31430640405535 - 2¹ = 31430640405533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31430640405491 and 31430640405500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31430640405533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 127672 + ... + 7929538.

It is an arithmetic number, because the mean of its divisors is an integer number (719020154880).

Almost surely, 2^{31430640405535} is an apocalyptic number.

31430640405535 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

31430640405535 is a deficient number, since it is larger than the sum of its proper divisors (14586649506785).

31430640405535 is a wasteful number, since it uses less digits than its factorization.

31430640405535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7802036.

The product of its (nonzero) digits is 1296000, while the sum is 43.

The spelling of 31430640405535 in words is "thirty-one trillion, four hundred thirty billion, six hundred forty million, four hundred five thousand, five hundred thirty-five".