20344131 has 12 divisors (see below), whose sum is σ = 29517280. Its totient is φ = 13502160.

The previous prime is 20344123. The next prime is 20344141. The reversal of 20344131 is 13144302.

It is not a de Polignac number, because 20344131 - 2³ = 20344123 is a prime.

It is a super-2 number, since 2×20344131² = 827767332290322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20344111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2875 + ... + 6996.

Almost surely, 2^20344131 is an apocalyptic number.

20344131 is a deficient number, since it is larger than the sum of its proper divisors (9173149).

20344131 is a wasteful number, since it uses less digits than its factorization.

20344131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10106 (or 10103 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 20344131 is about 4510.4468736479. The cubic root of 20344131 is about 272.9897754090.

Adding to 20344131 its reverse (13144302), we get a palindrome (33488433).

The spelling of 20344131 in words is "twenty million, three hundred forty-four thousand, one hundred thirty-one".