311696909 has 8 divisors (see below), whose sum is σ = 322333440. Its totient is φ = 301096800.

The previous prime is 311696873. The next prime is 311696923. The reversal of 311696909 is 909696113.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 311696909 - 2¹² = 311692813 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 311696909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311696929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8897 + ... + 26505.

It is an arithmetic number, because the mean of its divisors is an integer number (40291680).

Almost surely, 2^311696909 is an apocalyptic number.

It is an amenable number.

311696909 is a deficient number, since it is larger than the sum of its proper divisors (10636531).

311696909 is a wasteful number, since it uses less digits than its factorization.

311696909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18211.

The product of its (nonzero) digits is 78732, while the sum is 44.

The square root of 311696909 is about 17654.9400735318. The cubic root of 311696909 is about 678.0225923039.

The spelling of 311696909 in words is "three hundred eleven million, six hundred ninety-six thousand, nine hundred nine".