311134121 has 4 divisors (see below), whose sum is σ = 314630100. Its totient is φ = 307638144.

The previous prime is 311134097. The next prime is 311134123. The reversal of 311134121 is 121431113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121431113 = 1123 ⋅108131.

It can be written as a sum of positive squares in 2 ways, for example, as 55294096 + 255840025 = 7436^2 + 15995^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311134121 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 311134121.

It is not an unprimeable number, because it can be changed into a prime (311134123) 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, 1747856 + ... + 1748033.

It is an arithmetic number, because the mean of its divisors is an integer number (78657525).

Almost surely, 2^311134121 is an apocalyptic number.

It is an amenable number.

311134121 is a deficient number, since it is larger than the sum of its proper divisors (3495979).

311134121 is an equidigital number, since it uses as much as digits as its factorization.

311134121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3495978.

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

The square root of 311134121 is about 17638.9943307435. The cubic root of 311134121 is about 677.6142759175.

Adding to 311134121 its reverse (121431113), we get a palindrome (432565234).

The spelling of 311134121 in words is "three hundred eleven million, one hundred thirty-four thousand, one hundred twenty-one".