31020013222 has 8 divisors (see below), whose sum is σ = 50760021672. Its totient is φ = 14100006000.

The previous prime is 31020013163. The next prime is 31020013243. The reversal of 31020013222 is 22231002013.

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

It is a junction number, because it is equal to n+sod(n) for n = 31020013196 and 31020013205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 705000279 + ... + 705000322.

It is an arithmetic number, because the mean of its divisors is an integer number (6345002709).

Almost surely, 2^31020013222 is an apocalyptic number.

31020013222 is a deficient number, since it is larger than the sum of its proper divisors (19740008450).

31020013222 is a wasteful number, since it uses less digits than its factorization.

31020013222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410000614.

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

Adding to 31020013222 its reverse (22231002013), we get a palindrome (53251015235).

The spelling of 31020013222 in words is "thirty-one billion, twenty million, thirteen thousand, two hundred twenty-two".