311504122212136 has 64 divisors (see below), whose sum is σ = 676006732800000. Its totient is φ = 131802428871360.

The previous prime is 311504122212121. The next prime is 311504122212137. The reversal of 311504122212136 is 631212221405113.

It is not an unprimeable number, because it can be changed into a prime (311504122212137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59416671 + ... + 64446481.

It is an arithmetic number, because the mean of its divisors is an integer number (10562605200000).

Almost surely, 2^{311504122212136} is an apocalyptic number.

It is an amenable number.

311504122212136 is an abundant number, since it is smaller than the sum of its proper divisors (364502610587864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311504122212136 is a wasteful number, since it uses less digits than its factorization.

311504122212136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5043902 (or 5043898 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

Adding to 311504122212136 its reverse (631212221405113), we get a palindrome (942716343617249).

The spelling of 311504122212136 in words is "three hundred eleven trillion, five hundred four billion, one hundred twenty-two million, two hundred twelve thousand, one hundred thirty-six".