31443434413 has 4 divisors (see below), whose sum is σ = 33293048220. Its totient is φ = 29593820608.

The previous prime is 31443434377. The next prime is 31443434459.

31443434413 is nontrivially palindromic in base 10.

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 13514760009 + 17928674404 = 116253^2 + 133898^2 .

It is a cyclic number.

It is not a de Polignac number, because 31443434413 - 2¹⁷ = 31443303341 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 (31443434713) 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, 924806878 + ... + 924806911.

It is an arithmetic number, because the mean of its divisors is an integer number (8323262055).

Almost surely, 2^31443434413 is an apocalyptic number.

It is an amenable number.

31443434413 is a deficient number, since it is larger than the sum of its proper divisors (1849613807).

31443434413 is a wasteful number, since it uses less digits than its factorization.

31443434413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849613806.

The product of its digits is 82944, while the sum is 34.

The spelling of 31443434413 in words is "thirty-one billion, four hundred forty-three million, four hundred thirty-four thousand, four hundred thirteen".