20013351 has 8 divisors (see below), whose sum is σ = 26832624. Its totient is φ = 13268160.

The previous prime is 20013349. The next prime is 20013353. The reversal of 20013351 is 15331002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20013349) and next prime (20013353).

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

It is not a de Polignac number, because 20013351 - 2¹ = 20013349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20013351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013353) 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 7 ways as a sum of consecutive naturals, for example, 17886 + ... + 18971.

It is an arithmetic number, because the mean of its divisors is an integer number (3354078).

Almost surely, 2^20013351 is an apocalyptic number.

20013351 is a deficient number, since it is larger than the sum of its proper divisors (6819273).

20013351 is a wasteful number, since it uses less digits than its factorization.

20013351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37041.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 20013351 is about 4473.6283931502. The cubic root of 20013351 is about 271.5021485404.

Adding to 20013351 its reverse (15331002), we get a palindrome (35344353).

The spelling of 20013351 in words is "twenty million, thirteen thousand, three hundred fifty-one".