20134231 has 4 divisors (see below), whose sum is σ = 21683032. Its totient is φ = 18585432.

The previous prime is 20134211. The next prime is 20134241. The reversal of 20134231 is 13243102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20134231 - 2²¹ = 18037079 is a prime.

It is a super-2 number, since 2×20134231² = 810774515922722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20134201) 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, 774381 + ... + 774406.

It is an arithmetic number, because the mean of its divisors is an integer number (5420758).

Almost surely, 2^20134231 is an apocalyptic number.

20134231 is a deficient number, since it is larger than the sum of its proper divisors (1548801).

20134231 is a wasteful number, since it uses less digits than its factorization.

20134231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548800.

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

The square root of 20134231 is about 4487.1183403160. The cubic root of 20134231 is about 272.0476731246.

Adding to 20134231 its reverse (13243102), we get a palindrome (33377333).

The spelling of 20134231 in words is "twenty million, one hundred thirty-four thousand, two hundred thirty-one".