311672717 has 4 divisors (see below), whose sum is σ = 311858076. Its totient is φ = 311487360.

The previous prime is 311672689. The next prime is 311672743. The reversal of 311672717 is 717276113.

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 282878761 + 28793956 = 16819^2 + 5366^2 .

It is a cyclic number.

It is not a de Polignac number, because 311672717 - 2⁸ = 311672461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311672017) 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, 90134 + ... + 93527.

It is an arithmetic number, because the mean of its divisors is an integer number (77964519).

Almost surely, 2^311672717 is an apocalyptic number.

It is an amenable number.

311672717 is a deficient number, since it is larger than the sum of its proper divisors (185359).

311672717 is a wasteful number, since it uses less digits than its factorization.

311672717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185358.

The product of its digits is 12348, while the sum is 35.

The square root of 311672717 is about 17654.2549262210. The cubic root of 311672717 is about 678.0050505333.

The spelling of 311672717 in words is "three hundred eleven million, six hundred seventy-two thousand, seven hundred seventeen".