31222020323 has 8 divisors (see below), whose sum is σ = 33880385616. Its totient is φ = 28600322400.

The previous prime is 31222020299. The next prime is 31222020329. The reversal of 31222020323 is 32302022213.

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

It is not a de Polignac number, because 31222020323 - 2¹⁰ = 31222019299 is a prime.

It is a super-3 number, since 3×31222020323³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31222020295 and 31222020304.

It is not an unprimeable number, because it can be changed into a prime (31222020329) 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 7 ways as a sum of consecutive naturals, for example, 9165068 + ... + 9168473.

It is an arithmetic number, because the mean of its divisors is an integer number (4235048202).

Almost surely, 2^31222020323 is an apocalyptic number.

31222020323 is a deficient number, since it is larger than the sum of its proper divisors (2658365293).

31222020323 is a wasteful number, since it uses less digits than its factorization.

31222020323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18333685.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 31222020323 its reverse (32302022213), we get a palindrome (63524042536).

The spelling of 31222020323 in words is "thirty-one billion, two hundred twenty-two million, twenty thousand, three hundred twenty-three".