311034121 has 4 divisors (see below), whose sum is σ = 311645700. Its totient is φ = 310422544.

The previous prime is 311034079. The next prime is 311034131. The reversal of 311034121 is 121430113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121430113 = 7 ⋅17347159.

It can be written as a sum of positive squares in 2 ways, for example, as 253956096 + 57078025 = 15936^2 + 7555^2 .

It is a cyclic number.

It is not a de Polignac number, because 311034121 - 2⁹ = 311033609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311034095 and 311034104.

It is not an unprimeable number, because it can be changed into a prime (311034131) 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, 305026 + ... + 306043.

It is an arithmetic number, because the mean of its divisors is an integer number (77911425).

Almost surely, 2^311034121 is an apocalyptic number.

It is an amenable number.

311034121 is a deficient number, since it is larger than the sum of its proper divisors (611579).

311034121 is an equidigital number, since it uses as much as digits as its factorization.

311034121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611578.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 311034121 is about 17636.1594742166. The cubic root of 311034121 is about 677.5416719782.

Adding to 311034121 its reverse (121430113), we get a palindrome (432464234).

The spelling of 311034121 in words is "three hundred eleven million, thirty-four thousand, one hundred twenty-one".