311221342412 has 12 divisors (see below), whose sum is σ = 563417947680. Its totient is φ = 150244785936.

The previous prime is 311221342403. The next prime is 311221342427. The reversal of 311221342412 is 214243122113.

It is a happy 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, 1341471188 + ... + 1341471419.

It is an arithmetic number, because the mean of its divisors is an integer number (46951495640).

Almost surely, 2^311221342412 is an apocalyptic number.

It is an amenable number.

311221342412 is a deficient number, since it is larger than the sum of its proper divisors (252196605268).

311221342412 is a wasteful number, since it uses less digits than its factorization.

311221342412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2682942640 (or 2682942638 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

Adding to 311221342412 its reverse (214243122113), we get a palindrome (525464464525).

The spelling of 311221342412 in words is "three hundred eleven billion, two hundred twenty-one million, three hundred forty-two thousand, four hundred twelve".