31043331434 has 4 divisors (see below), whose sum is σ = 46564997154. Its totient is φ = 15521665716.

The previous prime is 31043331433. The next prime is 31043331467. The reversal of 31043331434 is 43413334013.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16077479209 + 14965852225 = 126797^2 + 122335^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31043331397 and 31043331406.

It is not an unprimeable number, because it can be changed into a prime (31043331433) 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 as a sum of consecutive naturals, namely, 7760832857 + ... + 7760832860.

Almost surely, 2^31043331434 is an apocalyptic number.

31043331434 is a deficient number, since it is larger than the sum of its proper divisors (15521665720).

31043331434 is a wasteful number, since it uses less digits than its factorization.

31043331434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15521665719.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 31043331434 its reverse (43413334013), we get a palindrome (74456665447).

The spelling of 31043331434 in words is "thirty-one billion, forty-three million, three hundred thirty-one thousand, four hundred thirty-four".