20242131 has 32 divisors (see below), whose sum is σ = 33868800. Its totient is φ = 10468224.

The previous prime is 20242129. The next prime is 20242169. The reversal of 20242131 is 13124202.

It is not a de Polignac number, because 20242131 - 2¹ = 20242129 is a prime.

It is a super-2 number, since 2×20242131² = 819487734842322, 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 20242131.

It is not an unprimeable number, because it can be changed into a prime (20242111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13770 + ... + 15168.

It is an arithmetic number, because the mean of its divisors is an integer number (1058400).

Almost surely, 2^20242131 is an apocalyptic number.

20242131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20242131 is a deficient number, since it is larger than the sum of its proper divisors (13626669).

20242131 is a wasteful number, since it uses less digits than its factorization.

20242131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20242131 is about 4499.1255817103. The cubic root of 20242131 is about 272.5327783705.

Adding to 20242131 its reverse (13124202), we get a palindrome (33366333).

The spelling of 20242131 in words is "twenty million, two hundred forty-two thousand, one hundred thirty-one".