20531414 has 4 divisors (see below), whose sum is σ = 30797124. Its totient is φ = 10265706.

The previous prime is 20531353. The next prime is 20531417. The reversal of 20531414 is 41413502.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20531417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5132852 + ... + 5132855.

It is an arithmetic number, because the mean of its divisors is an integer number (7699281).

Almost surely, 2^20531414 is an apocalyptic number.

20531414 is a deficient number, since it is larger than the sum of its proper divisors (10265710).

20531414 is a wasteful number, since it uses less digits than its factorization.

20531414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10265709.

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

The square root of 20531414 is about 4531.1603370439. The cubic root of 20531414 is about 273.8249098944.

Adding to 20531414 its reverse (41413502), we get a palindrome (61944916).

The spelling of 20531414 in words is "twenty million, five hundred thirty-one thousand, four hundred fourteen".