311478607 has 16 divisors (see below), whose sum is σ = 371395584. Its totient is φ = 257904000.

The previous prime is 311478577. The next prime is 311478611. The reversal of 311478607 is 706874113.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311478607 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 (311478677) 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 15 ways as a sum of consecutive naturals, for example, 21069 + ... + 32662.

It is an arithmetic number, because the mean of its divisors is an integer number (23212224).

Almost surely, 2^311478607 is an apocalyptic number.

311478607 is a deficient number, since it is larger than the sum of its proper divisors (59916977).

311478607 is a wasteful number, since it uses less digits than its factorization.

311478607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53790.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 311478607 is about 17648.7565284357. The cubic root of 311478607 is about 677.8642672861.

The spelling of 311478607 in words is "three hundred eleven million, four hundred seventy-eight thousand, six hundred seven".