31301222212 has 48 divisors (see below), whose sum is σ = 62117621440. Its totient is φ = 13681498752.

The previous prime is 31301222201. The next prime is 31301222219. The reversal of 31301222212 is 21222210313.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 31301222212.

It is not an unprimeable number, because it can be changed into a prime (31301222219) 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 15 ways as a sum of consecutive naturals, for example, 5368843 + ... + 5374669.

Almost surely, 2^31301222212 is an apocalyptic number.

It is an amenable number.

31301222212 is a deficient number, since it is larger than the sum of its proper divisors (30816399228).

31301222212 is a wasteful number, since it uses less digits than its factorization.

31301222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11300 (or 11298 counting only the distinct ones).

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

Adding to 31301222212 its reverse (21222210313), we get a palindrome (52523432525).

The spelling of 31301222212 in words is "thirty-one billion, three hundred one million, two hundred twenty-two thousand, two hundred twelve".