31424642413 has 4 divisors (see below), whose sum is σ = 32191097148. Its totient is φ = 30658187680.

The previous prime is 31424642329. The next prime is 31424642449.

31424642413 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 7832604004 + 23592038409 = 88502^2 + 153597^2 .

It is a cyclic number.

It is not a de Polignac number, because 31424642413 - 2²¹ = 31422545261 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 (31424642113) 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, 383227306 + ... + 383227387.

It is an arithmetic number, because the mean of its divisors is an integer number (8047774287).

Almost surely, 2^31424642413 is an apocalyptic number.

It is an amenable number.

31424642413 is a deficient number, since it is larger than the sum of its proper divisors (766454735).

31424642413 is an equidigital number, since it uses as much as digits as its factorization.

31424642413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 766454734.

The product of its digits is 55296, while the sum is 34.

The spelling of 31424642413 in words is "thirty-one billion, four hundred twenty-four million, six hundred forty-two thousand, four hundred thirteen".