20334131 has 4 divisors (see below), whose sum is σ = 20352264. Its totient is φ = 20316000.

The previous prime is 20334121. The next prime is 20334137. The reversal of 20334131 is 13143302.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13143302 = 2 ⋅6571651.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20334131 is a prime.

It is a super-2 number, since 2×20334131² = 826953767050322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20334137) 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, 7265 + ... + 9666.

It is an arithmetic number, because the mean of its divisors is an integer number (5088066).

Almost surely, 2^20334131 is an apocalyptic number.

20334131 is a deficient number, since it is larger than the sum of its proper divisors (18133).

20334131 is a wasteful number, since it uses less digits than its factorization.

20334131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18132.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 20334131 is about 4509.3381997805. The cubic root of 20334131 is about 272.9450394086.

Adding to 20334131 its reverse (13143302), we get a palindrome (33477433).

The spelling of 20334131 in words is "twenty million, three hundred thirty-four thousand, one hundred thirty-one".