31320223101 has 28 divisors (see below), whose sum is σ = 47754831360. Its totient is φ = 20526219720.

The previous prime is 31320223093. The next prime is 31320223111. The reversal of 31320223101 is 10132202313.

31320223101 is a `hidden beast` number, since 31 + 320 + 2 + 2 + 310 + 1 = 666.

It is not a de Polignac number, because 31320223101 - 2³ = 31320223093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31320223111) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 321085 + ... + 407106.

Almost surely, 2^31320223101 is an apocalyptic number.

It is an amenable number.

31320223101 is a deficient number, since it is larger than the sum of its proper divisors (16434608259).

31320223101 is an frugal number, since it uses more digits than its factorization.

31320223101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728268 (or 728253 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 31320223101 its reverse (10132202313), we get a palindrome (41452425414).

The spelling of 31320223101 in words is "thirty-one billion, three hundred twenty million, two hundred twenty-three thousand, one hundred one".