31030103221211 has 16 divisors (see below), whose sum is σ = 33328503787968. Its totient is φ = 28784524876800.

The previous prime is 31030103221171. The next prime is 31030103221217. The reversal of 31030103221211 is 11212230103013.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 31030103221211 - 2³⁰ = 31029029479387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31030103221217) 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 15 ways as a sum of consecutive naturals, for example, 103010 + ... + 7878503.

It is an arithmetic number, because the mean of its divisors is an integer number (2083031486748).

Almost surely, 2^{31030103221211} is an apocalyptic number.

31030103221211 is a deficient number, since it is larger than the sum of its proper divisors (2298400566757).

31030103221211 is a wasteful number, since it uses less digits than its factorization.

31030103221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7984822.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 31030103221211 its reverse (11212230103013), we get a palindrome (42242333324224).

The spelling of 31030103221211 in words is "thirty-one trillion, thirty billion, one hundred three million, two hundred twenty-one thousand, two hundred eleven".