311211230320 has 40 divisors (see below), whose sum is σ = 766128826224. Its totient is φ = 117161874432.

The previous prime is 311211230299. The next prime is 311211230381. The reversal of 311211230320 is 23032112113.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114414534 + ... + 114417253.

Almost surely, 2^311211230320 is an apocalyptic number.

It is an amenable number.

311211230320 is an abundant number, since it is smaller than the sum of its proper divisors (454917595904).

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

311211230320 is a wasteful number, since it uses less digits than its factorization.

311211230320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228831817 (or 228831811 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 311211230320 its reverse (23032112113), we get a palindrome (334243342433).

The spelling of 311211230320 in words is "three hundred eleven billion, two hundred eleven million, two hundred thirty thousand, three hundred twenty".