31210220133122 has 8 divisors (see below), whose sum is σ = 47582794629372. Its totient is φ = 15349288590000.

The previous prime is 31210220133083. The next prime is 31210220133163. The reversal of 31210220133122 is 22133102201213.

It can be written as a sum of positive squares in 2 ways, for example, as 22161488344801 + 9048731788321 = 4707599^2 + 3008111^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127910738129 + ... + 127910738372.

Almost surely, 2^{31210220133122} is an apocalyptic number.

31210220133122 is a deficient number, since it is larger than the sum of its proper divisors (16372574496250).

31210220133122 is a wasteful number, since it uses less digits than its factorization.

31210220133122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255821476564.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 31210220133122 its reverse (22133102201213), we get a palindrome (53343322334335).

The spelling of 31210220133122 in words is "thirty-one trillion, two hundred ten billion, two hundred twenty million, one hundred thirty-three thousand, one hundred twenty-two".