20312134 has 8 divisors (see below), whose sum is σ = 30511440. Its totient is φ = 10141656.

The previous prime is 20312113. The next prime is 20312137. The reversal of 20312134 is 43121302.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5349 + ... + 8320.

It is an arithmetic number, because the mean of its divisors is an integer number (3813930).

Almost surely, 2^20312134 is an apocalyptic number.

20312134 is a deficient number, since it is larger than the sum of its proper divisors (10199306).

20312134 is a wasteful number, since it uses less digits than its factorization.

20312134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14414.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 20312134 is about 4506.8984900927. The cubic root of 20312134 is about 272.8465819870.

Adding to 20312134 its reverse (43121302), we get a palindrome (63433436).

The spelling of 20312134 in words is "twenty million, three hundred twelve thousand, one hundred thirty-four".