311907 has 4 divisors (see below), whose sum is σ = 415880. Its totient is φ = 207936.

The previous prime is 311897. The next prime is 311951. The reversal of 311907 is 709113.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 311907 - 2¹⁰ = 310883 is a prime.

It is a D-number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 311907.

It is not an unprimeable number, because it can be changed into a prime (311957) 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, 51982 + ... + 51987.

It is an arithmetic number, because the mean of its divisors is an integer number (103970).

2³¹¹⁹⁰⁷ is an apocalyptic number.

311907 is a deficient number, since it is larger than the sum of its proper divisors (103973).

311907 is a wasteful number, since it uses less digits than its factorization.

311907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103972.

The product of its (nonzero) digits is 189, while the sum is 21.

The square root of 311907 is about 558.4863471921. The cubic root of 311907 is about 67.8174892448.

It can be divided in two parts, 3 and 11907, that multiplied together give a square (35721 = 189²).

The spelling of 311907 in words is "three hundred eleven thousand, nine hundred seven".