31021230022 has 16 divisors (see below), whose sum is σ = 47853273600. Its totient is φ = 15073764552.

The previous prime is 31021229999. The next prime is 31021230041. The reversal of 31021230022 is 22003212013.

It is a junction number, because it is equal to n+sod(n) for n = 31021229978 and 31021230005.

It is a congruent number.

It is an unprimeable number.

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, 889198 + ... + 923425.

It is an arithmetic number, because the mean of its divisors is an integer number (2990829600).

Almost surely, 2^31021230022 is an apocalyptic number.

31021230022 is a deficient number, since it is larger than the sum of its proper divisors (16832043578).

31021230022 is a wasteful number, since it uses less digits than its factorization.

31021230022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1812867.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 31021230022 its reverse (22003212013), we get a palindrome (53024442035).

The spelling of 31021230022 in words is "thirty-one billion, twenty-one million, two hundred thirty thousand, twenty-two".