31030221101 has 16 divisors (see below), whose sum is σ = 34697073600. Its totient is φ = 27505161600.

The previous prime is 31030221097. The next prime is 31030221223. The reversal of 31030221101 is 10112203013.

It is not a de Polignac number, because 31030221101 - 2² = 31030221097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31030227101) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 787610 + ... + 826068.

It is an arithmetic number, because the mean of its divisors is an integer number (2168567100).

Almost surely, 2^31030221101 is an apocalyptic number.

It is an amenable number.

31030221101 is a deficient number, since it is larger than the sum of its proper divisors (3666852499).

31030221101 is a wasteful number, since it uses less digits than its factorization.

31030221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40300.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 31030221101 its reverse (10112203013), we get a palindrome (41142424114).

The spelling of 31030221101 in words is "thirty-one billion, thirty million, two hundred twenty-one thousand, one hundred one".