20214631 has 8 divisors (see below), whose sum is σ = 21248640. Its totient is φ = 19193592.

The previous prime is 20214611. The next prime is 20214647. The reversal of 20214631 is 13641202.

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

It is not a de Polignac number, because 20214631 - 2¹¹ = 20212583 is a prime.

It is a super-2 number, since 2×20214631² = 817262612932322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20214599 and 20214608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20214611) 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, 36 + ... + 6358.

It is an arithmetic number, because the mean of its divisors is an integer number (2656080).

Almost surely, 2^20214631 is an apocalyptic number.

20214631 is a deficient number, since it is larger than the sum of its proper divisors (1034009).

20214631 is a wasteful number, since it uses less digits than its factorization.

20214631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6485.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 20214631 is about 4496.0683936079. The cubic root of 20214631 is about 272.4093057327.

Adding to 20214631 its reverse (13641202), we get a palindrome (33855833).

The spelling of 20214631 in words is "twenty million, two hundred fourteen thousand, six hundred thirty-one".