31304221314413 has 4 divisors (see below), whose sum is σ = 31304755565628. Its totient is φ = 31303687063200.

The previous prime is 31304221314403. The next prime is 31304221314433. The reversal of 31304221314413 is 31441312240313.

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 21220376607364 + 10083844707049 = 4606558^2 + 3175507^2 .

It is a cyclic number.

It is not a de Polignac number, because 31304221314413 - 2²⁰ = 31304220265837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31304221314413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31304221314403) 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, 267037706 + ... + 267154907.

It is an arithmetic number, because the mean of its divisors is an integer number (7826188891407).

Almost surely, 2^{31304221314413} is an apocalyptic number.

It is an amenable number.

31304221314413 is a deficient number, since it is larger than the sum of its proper divisors (534251215).

31304221314413 is an equidigital number, since it uses as much as digits as its factorization.

31304221314413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534251214.

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 31304221314413 its reverse (31441312240313), we get a palindrome (62745533554726).

The spelling of 31304221314413 in words is "thirty-one trillion, three hundred four billion, two hundred twenty-one million, three hundred fourteen thousand, four hundred thirteen".