31242223021105 has 8 divisors (see below), whose sum is σ = 37492093663272. Its totient is φ = 24992827724928.

The previous prime is 31242223021033. The next prime is 31242223021159. The reversal of 31242223021105 is 50112032224213.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 10457158465009 + 20785064556096 = 3233753^2 + 4559064^2 .

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 31242223021105 - 2⁷ = 31242223020977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118691884 + ... + 118954813.

It is an arithmetic number, because the mean of its divisors is an integer number (4686511707909).

Almost surely, 2^{31242223021105} is an apocalyptic number.

It is an amenable number.

31242223021105 is a deficient number, since it is larger than the sum of its proper divisors (6249870642167).

31242223021105 is a wasteful number, since it uses less digits than its factorization.

31242223021105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237672995.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 31242223021105 its reverse (50112032224213), we get a palindrome (81354255245318).

The spelling of 31242223021105 in words is "thirty-one trillion, two hundred forty-two billion, two hundred twenty-three million, twenty-one thousand, one hundred five".