31420421240213 has 8 divisors (see below), whose sum is σ = 31634552592000. Its totient is φ = 31206333302608.

The previous prime is 31420421240161. The next prime is 31420421240227. The reversal of 31420421240213 is 31204212402413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31420421240213 - 2¹⁰ = 31420421239189 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 (31420421240113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9400481 + ... + 12296742.

It is an arithmetic number, because the mean of its divisors is an integer number (3954319074000).

Almost surely, 2^{31420421240213} is an apocalyptic number.

It is an amenable number.

31420421240213 is a deficient number, since it is larger than the sum of its proper divisors (214131351787).

31420421240213 is a wasteful number, since it uses less digits than its factorization.

31420421240213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21707091.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 31420421240213 its reverse (31204212402413), we get a palindrome (62624633642626).

The spelling of 31420421240213 in words is "thirty-one trillion, four hundred twenty billion, four hundred twenty-one million, two hundred forty thousand, two hundred thirteen".