311120321211320 has 64 divisors (see below), whose sum is σ = 716305782820320. Its totient is φ = 121553051203584.

The previous prime is 311120321211313. The next prime is 311120321211331. The reversal of 311120321211320 is 23112123021113.

It is a happy number.

It is a super-2 number, since 2×311120321211320² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 249109052 + ... + 250354868.

Almost surely, 2^{311120321211320} is an apocalyptic number.

It is an amenable number.

311120321211320 is an abundant number, since it is smaller than the sum of its proper divisors (405185461609000).

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

311120321211320 is a wasteful number, since it uses less digits than its factorization.

311120321211320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391064 (or 1391060 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 311120321211320 its reverse (23112123021113), we get a palindrome (334232444232433).

The spelling of 311120321211320 in words is "three hundred eleven trillion, one hundred twenty billion, three hundred twenty-one million, two hundred eleven thousand, three hundred twenty".