20514131 has 4 divisors (see below), whose sum is σ = 22379064. Its totient is φ = 18649200.

The previous prime is 20514103. The next prime is 20514149. The reversal of 20514131 is 13141502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20514131 - 2²² = 16319827 is a prime.

It is a super-2 number, since 2×20514131² = 841659141370322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20514191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 932450 + ... + 932471.

It is an arithmetic number, because the mean of its divisors is an integer number (5594766).

Almost surely, 2^20514131 is an apocalyptic number.

20514131 is a deficient number, since it is larger than the sum of its proper divisors (1864933).

20514131 is a wasteful number, since it uses less digits than its factorization.

20514131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864932.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 20514131 is about 4529.2528081351. The cubic root of 20514131 is about 273.7480545861.

Adding to 20514131 its reverse (13141502), we get a palindrome (33655633).

The spelling of 20514131 in words is "twenty million, five hundred fourteen thousand, one hundred thirty-one".