20311677 has 12 divisors (see below), whose sum is σ = 29693664. Its totient is φ = 13377480.

The previous prime is 20311657. The next prime is 20311679. The reversal of 20311677 is 77611302.

It is not a de Polignac number, because 20311677 - 2²² = 16117373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20311677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311679) 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 11 ways as a sum of consecutive naturals, for example, 12849 + ... + 14342.

It is an arithmetic number, because the mean of its divisors is an integer number (2474472).

Almost surely, 2^20311677 is an apocalyptic number.

It is an amenable number.

20311677 is a deficient number, since it is larger than the sum of its proper divisors (9381987).

20311677 is a wasteful number, since it uses less digits than its factorization.

20311677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27280 (or 27277 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 20311677 is about 4506.8477897528. The cubic root of 20311677 is about 272.8445357254.

Adding to 20311677 its reverse (77611302), we get a palindrome (97922979).

The spelling of 20311677 in words is "twenty million, three hundred eleven thousand, six hundred seventy-seven".