311666051 has 8 divisors (see below), whose sum is σ = 319500384. Its totient is φ = 303842880.

The previous prime is 311666011. The next prime is 311666057. The reversal of 311666051 is 150666113.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311666051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311666057) 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 7 ways as a sum of consecutive naturals, for example, 101105 + ... + 104141.

It is an arithmetic number, because the mean of its divisors is an integer number (39937548).

Almost surely, 2^311666051 is an apocalyptic number.

311666051 is a deficient number, since it is larger than the sum of its proper divisors (7834333).

311666051 is a wasteful number, since it uses less digits than its factorization.

311666051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5581.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 311666051 is about 17654.0661321974. The cubic root of 311666051 is about 678.0002168155. Note that the first 3 decimals are identical.

The spelling of 311666051 in words is "three hundred eleven million, six hundred sixty-six thousand, fifty-one".