311130222101 has 4 divisors (see below), whose sum is σ = 315392280012. Its totient is φ = 306868164192.

The previous prime is 311130222049. The next prime is 311130222127. The reversal of 311130222101 is 101222031113.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 129402795076 + 181727427025 = 359726^2 + 426295^2 .

It is a cyclic number.

It is not a de Polignac number, because 311130222101 - 2²⁶ = 311063113237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 311130222101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311130252101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2131028846 + ... + 2131028991.

It is an arithmetic number, because the mean of its divisors is an integer number (78848070003).

Almost surely, 2^311130222101 is an apocalyptic number.

It is an amenable number.

311130222101 is a deficient number, since it is larger than the sum of its proper divisors (4262057911).

311130222101 is an equidigital number, since it uses as much as digits as its factorization.

311130222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4262057910.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 311130222101 its reverse (101222031113), we get a palindrome (412352253214).

The spelling of 311130222101 in words is "three hundred eleven billion, one hundred thirty million, two hundred twenty-two thousand, one hundred one".