311022212130 has 128 divisors (see below), whose sum is σ = 948755496960. Its totient is φ = 71024921280.

The previous prime is 311022212113. The next prime is 311022212161. The reversal of 311022212130 is 31212220113.

311022212130 is a `hidden beast` number, since 311 + 0 + 2 + 221 + 2 + 130 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1978735 + ... + 2130125.

It is an arithmetic number, because the mean of its divisors is an integer number (7412152320).

Almost surely, 2^311022212130 is an apocalyptic number.

311022212130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 311022212130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (474377748480).

311022212130 is an abundant number, since it is smaller than the sum of its proper divisors (637733284830).

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

311022212130 is a wasteful number, since it uses less digits than its factorization.

311022212130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152501 (or 152495 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 311022212130 its reverse (31212220113), we get a palindrome (342234432243).

The spelling of 311022212130 in words is "three hundred eleven billion, twenty-two million, two hundred twelve thousand, one hundred thirty".