31621318410241 has 4 divisors (see below), whose sum is σ = 36138649611712. Its totient is φ = 27103987208772.

The previous prime is 31621318410239. The next prime is 31621318410257. The reversal of 31621318410241 is 14201481312613.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31621318410241 - 2¹ = 31621318410239 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 31621318410241.

It is not an unprimeable number, because it can be changed into a prime (31621316410241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2258665600725 + ... + 2258665600738.

It is an arithmetic number, because the mean of its divisors is an integer number (9034662402928).

Almost surely, 2^{31621318410241} is an apocalyptic number.

It is an amenable number.

31621318410241 is a deficient number, since it is larger than the sum of its proper divisors (4517331201471).

31621318410241 is an equidigital number, since it uses as much as digits as its factorization.

31621318410241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4517331201470.

The product of its (nonzero) digits is 27648, while the sum is 37.

Adding to 31621318410241 its reverse (14201481312613), we get a palindrome (45822799722854).

The spelling of 31621318410241 in words is "thirty-one trillion, six hundred twenty-one billion, three hundred eighteen million, four hundred ten thousand, two hundred forty-one".