20315073 has 8 divisors (see below), whose sum is σ = 27112768. Its totient is φ = 13530384.

The previous prime is 20315069. The next prime is 20315081. The reversal of 20315073 is 37051302.

It is a happy number.

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

It is not a de Polignac number, because 20315073 - 2² = 20315069 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20315023) 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, 1311 + ... + 6507.

It is an arithmetic number, because the mean of its divisors is an integer number (3389096).

Almost surely, 2^20315073 is an apocalyptic number.

It is an amenable number.

20315073 is a deficient number, since it is larger than the sum of its proper divisors (6797695).

20315073 is a wasteful number, since it uses less digits than its factorization.

20315073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6503.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 20315073 is about 4507.2245340120. The cubic root of 20315073 is about 272.8597409102.

Adding to 20315073 its reverse (37051302), we get a palindrome (57366375).

The spelling of 20315073 in words is "twenty million, three hundred fifteen thousand, seventy-three".