31048058221 has 4 divisors (see below), whose sum is σ = 31557042844. Its totient is φ = 30539073600.

The previous prime is 31048058191. The next prime is 31048058227. The reversal of 31048058221 is 12285084013.

It is a happy number.

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 11639388996 + 19408669225 = 107886^2 + 139315^2 .

It is a cyclic number.

It is not a de Polignac number, because 31048058221 - 2¹⁷ = 31047927149 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 (31048058227) 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, 254492220 + ... + 254492341.

It is an arithmetic number, because the mean of its divisors is an integer number (7889260711).

Almost surely, 2^31048058221 is an apocalyptic number.

It is an amenable number.

31048058221 is a deficient number, since it is larger than the sum of its proper divisors (508984623).

31048058221 is an equidigital number, since it uses as much as digits as its factorization.

31048058221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508984622.

The product of its (nonzero) digits is 15360, while the sum is 34.

The spelling of 31048058221 in words is "thirty-one billion, forty-eight million, fifty-eight thousand, two hundred twenty-one".