20146131 has 8 divisors (see below), whose sum is σ = 29846160. Its totient is φ = 13430736.

The previous prime is 20146111. The next prime is 20146153. The reversal of 20146131 is 13164102.

It is a happy number.

20146131 is a `hidden beast` number, since 201 + 461 + 3 + 1 = 666.

It is not a de Polignac number, because 20146131 - 2¹⁰ = 20145107 is a prime.

It is a super-2 number, since 2×20146131² = 811733188538322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20146111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373050 + ... + 373103.

It is an arithmetic number, because the mean of its divisors is an integer number (3730770).

Almost surely, 2^20146131 is an apocalyptic number.

20146131 is a deficient number, since it is larger than the sum of its proper divisors (9700029).

20146131 is an equidigital number, since it uses as much as digits as its factorization.

20146131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746162 (or 746156 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 20146131 is about 4488.4441625133. Note that the first 3 decimals coincide. The cubic root of 20146131 is about 272.1012589758.

The spelling of 20146131 in words is "twenty million, one hundred forty-six thousand, one hundred thirty-one".