31222213102 has 16 divisors (see below), whose sum is σ = 48453002640. Its totient is φ = 15071317632.

The previous prime is 31222213093. The next prime is 31222213109. The reversal of 31222213102 is 20131222213.

It is a self number, because there is not a number n which added to its sum of digits gives 31222213102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31222213109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 785233 + ... + 824035.

It is an arithmetic number, because the mean of its divisors is an integer number (3028312665).

Almost surely, 2^31222213102 is an apocalyptic number.

31222213102 is a deficient number, since it is larger than the sum of its proper divisors (17230789538).

31222213102 is a wasteful number, since it uses less digits than its factorization.

31222213102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52707.

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

Adding to 31222213102 its reverse (20131222213), we get a palindrome (51353435315).

The spelling of 31222213102 in words is "thirty-one billion, two hundred twenty-two million, two hundred thirteen thousand, one hundred two".