20350131 has 8 divisors (see below), whose sum is σ = 27156480. Its totient is φ = 13555272.

The previous prime is 20350129. The next prime is 20350171. The reversal of 20350131 is 13105302.

It is a happy number.

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

It is not a de Polignac number, because 20350131 - 2¹ = 20350129 is a prime.

It is a super-2 number, since 2×20350131² = 828255663434322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20350131.

It is not an unprimeable number, because it can be changed into a prime (20350171) 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, 2950 + ... + 7028.

It is an arithmetic number, because the mean of its divisors is an integer number (3394560).

Almost surely, 2^20350131 is an apocalyptic number.

20350131 is a deficient number, since it is larger than the sum of its proper divisors (6806349).

20350131 is a wasteful number, since it uses less digits than its factorization.

20350131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5745.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 20350131 is about 4511.1119471811. Note that the first 3 decimals coincide. The cubic root of 20350131 is about 273.0166099730.

Adding to 20350131 its reverse (13105302), we get a palindrome (33455433).

The spelling of 20350131 in words is "twenty million, three hundred fifty thousand, one hundred thirty-one".