20311134 has 16 divisors (see below), whose sum is σ = 40828800. Its totient is φ = 6735960.

The previous prime is 20311129. The next prime is 20311177. The reversal of 20311134 is 43111302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7312 + ... + 9699.

It is an arithmetic number, because the mean of its divisors is an integer number (2551800).

Almost surely, 2^20311134 is an apocalyptic number.

20311134 is an abundant number, since it is smaller than the sum of its proper divisors (20517666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20311134 is a wasteful number, since it uses less digits than its factorization.

20311134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17215.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 20311134 is about 4506.7875476885. The cubic root of 20311134 is about 272.8421043505.

Adding to 20311134 its reverse (43111302), we get a palindrome (63422436).

The spelling of 20311134 in words is "twenty million, three hundred eleven thousand, one hundred thirty-four".