31220342101 has 8 divisors (see below), whose sum is σ = 33809741280. Its totient is φ = 28657776432.

The previous prime is 31220342093. The next prime is 31220342123. The reversal of 31220342101 is 10124302213.

It is a happy number.

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 31220342101 - 2³ = 31220342093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31220342171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6705955 + ... + 6710608.

It is an arithmetic number, because the mean of its divisors is an integer number (4226217660).

Almost surely, 2^31220342101 is an apocalyptic number.

It is an amenable number.

31220342101 is a deficient number, since it is larger than the sum of its proper divisors (2589399179).

31220342101 is a wasteful number, since it uses less digits than its factorization.

31220342101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13416755.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31220342101 its reverse (10124302213), we get a palindrome (41344644314).

It can be divided in two parts, 31220 and 342101, that added together give a square (373321 = 611²).

The spelling of 31220342101 in words is "thirty-one billion, two hundred twenty million, three hundred forty-two thousand, one hundred one".