31194012221201 has 4 divisors (see below), whose sum is σ = 31216831543872. Its totient is φ = 31171192898532.

The previous prime is 31194012221189. The next prime is 31194012221221. The reversal of 31194012221201 is 10212221049113.

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 31194012221201 - 2¹⁰ = 31194012220177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31194012221221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11409659285 + ... + 11409662018.

It is an arithmetic number, because the mean of its divisors is an integer number (7804207885968).

Almost surely, 2^{31194012221201} is an apocalyptic number.

It is an amenable number.

31194012221201 is a deficient number, since it is larger than the sum of its proper divisors (22819322671).

31194012221201 is a wasteful number, since it uses less digits than its factorization.

31194012221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22819322670.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 31194012221201 in words is "thirty-one trillion, one hundred ninety-four billion, twelve million, two hundred twenty-one thousand, two hundred one".