31334433434221 has 16 divisors (see below), whose sum is σ = 31791873031600. Its totient is φ = 30880356392448.

The previous prime is 31334433434203. The next prime is 31334433434231. The reversal of 31334433434221 is 12243433443313.

It can be written as a sum of positive squares in 8 ways, for example, as 7221285690025 + 24113147744196 = 2687245^2 + 4910514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31334433434221 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 (31334433434231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24256561 + ... + 25515673.

It is an arithmetic number, because the mean of its divisors is an integer number (1986992064475).

Almost surely, 2^{31334433434221} is an apocalyptic number.

It is an amenable number.

31334433434221 is a deficient number, since it is larger than the sum of its proper divisors (457439597379).

31334433434221 is a wasteful number, since it uses less digits than its factorization.

31334433434221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1260448.

The product of its digits is 746496, while the sum is 40.

Adding to 31334433434221 its reverse (12243433443313), we get a palindrome (43577866877534).

The spelling of 31334433434221 in words is "thirty-one trillion, three hundred thirty-four billion, four hundred thirty-three million, four hundred thirty-four thousand, two hundred twenty-one".