20311150 has 24 divisors (see below), whose sum is σ = 38803320. Its totient is φ = 7904160.

The previous prime is 20311129. The next prime is 20311177. The reversal of 20311150 is 5111302.

It is a self number, because there is not a number n which added to its sum of digits gives 20311150.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3640 + ... + 7339.

It is an arithmetic number, because the mean of its divisors is an integer number (1616805).

Almost surely, 2^20311150 is an apocalyptic number.

20311150 is a deficient number, since it is larger than the sum of its proper divisors (18492170).

20311150 is a wasteful number, since it uses less digits than its factorization.

20311150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11028 (or 11023 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 20311150 is about 4506.7893227885. The cubic root of 20311150 is about 272.8421759939.

Adding to 20311150 its reverse (5111302), we get a palindrome (25422452).

The spelling of 20311150 in words is "twenty million, three hundred eleven thousand, one hundred fifty".