311001113 has 4 divisors (see below), whose sum is σ = 318586548. Its totient is φ = 303415680.

The previous prime is 311001091. The next prime is 311001121. The reversal of 311001113 is 311100113.

It is a happy number.

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 36336784 + 274664329 = 6028^2 + 16573^2 .

It is a cyclic number.

It is not a de Polignac number, because 311001113 - 2⁸ = 311000857 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311001094 and 311001103.

It is not an unprimeable number, because it can be changed into a prime (311001013) 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, 3792656 + ... + 3792737.

It is an arithmetic number, because the mean of its divisors is an integer number (79646637).

Almost surely, 2^311001113 is an apocalyptic number.

It is an amenable number.

311001113 is a deficient number, since it is larger than the sum of its proper divisors (7585435).

311001113 is an equidigital number, since it uses as much as digits as its factorization.

311001113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7585434.

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 311001113 is about 17635.2236447401. The cubic root of 311001113 is about 677.5177034539.

Adding to 311001113 its reverse (311100113), we get a palindrome (622101226).

The spelling of 311001113 in words is "three hundred eleven million, one thousand, one hundred thirteen".