311022220130 has 32 divisors (see below), whose sum is σ = 561185572464. Its totient is φ = 124110176256.

The previous prime is 311022220049. The next prime is 311022220183. The reversal of 311022220130 is 31022220113.

It can be written as a sum of positive squares in 8 ways, for example, as 190777641961 + 120244578169 = 436781^2 + 346763^2 .

It is a junction number, because it is equal to n+sod(n) for n = 311022220099 and 311022220108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8598242 + ... + 8634338.

Almost surely, 2^311022220130 is an apocalyptic number.

311022220130 is a deficient number, since it is larger than the sum of its proper divisors (250163352334).

311022220130 is a wasteful number, since it uses less digits than its factorization.

311022220130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38150.

The product of its (nonzero) digits is 144, while the sum is 17.

Subtracting from 311022220130 its sum of digits (17), we obtain a palindrome (311022220113).

Adding to 311022220130 its reverse (31022220113), we get a palindrome (342044440243).

The spelling of 311022220130 in words is "three hundred eleven billion, twenty-two million, two hundred twenty thousand, one hundred thirty".