31434422213 has 4 divisors (see below), whose sum is σ = 31446097548. Its totient is φ = 31422746880.

The previous prime is 31434422177. The next prime is 31434422231. The reversal of 31434422213 is 31222443413.

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 10670476804 + 20763945409 = 103298^2 + 144097^2 .

It is a cyclic number.

It is not a de Polignac number, because 31434422213 - 2²² = 31430227909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31434422293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5833628 + ... + 5839013.

It is an arithmetic number, because the mean of its divisors is an integer number (7861524387).

Almost surely, 2^31434422213 is an apocalyptic number.

It is an amenable number.

31434422213 is a deficient number, since it is larger than the sum of its proper divisors (11675335).

31434422213 is a wasteful number, since it uses less digits than its factorization.

31434422213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11675334.

The product of its digits is 13824, while the sum is 29.

Adding to 31434422213 its reverse (31222443413), we get a palindrome (62656865626).

The spelling of 31434422213 in words is "thirty-one billion, four hundred thirty-four million, four hundred twenty-two thousand, two hundred thirteen".