311301013 has 4 divisors (see below), whose sum is σ = 313283980. Its totient is φ = 309318048.

The previous prime is 311300989. The next prime is 311301019. The reversal of 311301013 is 310103113.

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 216472369 + 94828644 = 14713^2 + 9738^2 .

It is a cyclic number.

It is not a de Polignac number, because 311301013 - 2⁹ = 311300501 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 311300984 and 311301002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311301019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 991248 + ... + 991561.

It is an arithmetic number, because the mean of its divisors is an integer number (78320995).

Almost surely, 2^311301013 is an apocalyptic number.

It is an amenable number.

311301013 is a deficient number, since it is larger than the sum of its proper divisors (1982967).

311301013 is a wasteful number, since it uses less digits than its factorization.

311301013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1982966.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 311301013 is about 17643.7244650896. The cubic root of 311301013 is about 677.7354114450.

Adding to 311301013 its reverse (310103113), we get a palindrome (621404126).

The spelling of 311301013 in words is "three hundred eleven million, three hundred one thousand, thirteen".