311525113 has 4 divisors (see below), whose sum is σ = 311621968. Its totient is φ = 311428260.

The previous prime is 311525099. The next prime is 311525117.

311525113 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 311525113 - 2¹³ = 311516921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311525117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43431 + ... + 50092.

It is an arithmetic number, because the mean of its divisors is an integer number (77905492).

Almost surely, 2^311525113 is an apocalyptic number.

It is an amenable number.

311525113 is a deficient number, since it is larger than the sum of its proper divisors (96855).

311525113 is an equidigital number, since it uses as much as digits as its factorization.

311525113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96854.

The product of its digits is 450, while the sum is 22.

The square root of 311525113 is about 17650.0740225077. The cubic root of 311525113 is about 677.8980022800.

The spelling of 311525113 in words is "three hundred eleven million, five hundred twenty-five thousand, one hundred thirteen".