20414531 has 8 divisors (see below), whose sum is σ = 21854400. Its totient is φ = 19011240.

The previous prime is 20414503. The next prime is 20414533. The reversal of 20414531 is 13541402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20414531 is a prime.

It is a super-2 number, since 2×20414531² = 833506151899922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20414533) 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, 7985 + ... + 10226.

It is an arithmetic number, because the mean of its divisors is an integer number (2731800).

Almost surely, 2^20414531 is an apocalyptic number.

20414531 is a deficient number, since it is larger than the sum of its proper divisors (1439869).

20414531 is a wasteful number, since it uses less digits than its factorization.

20414531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18289.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 20414531 is about 4518.2442386396. The cubic root of 20414531 is about 273.3043027202.

Adding to 20414531 its reverse (13541402), we get a palindrome (33955933).

The spelling of 20414531 in words is "twenty million, four hundred fourteen thousand, five hundred thirty-one".