20130797 has 2 divisors, whose sum is σ = 20130798. Its totient is φ = 20130796.

The previous prime is 20130791. The next prime is 20130829. The reversal of 20130797 is 79703102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19838116 + 292681 = 4454^2 + 541^2 .

It is a cyclic number.

It is not a de Polignac number, because 20130797 - 2⁸ = 20130541 is a prime.

It is a super-3 number, since 3×20130797³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20130791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065398 + 10065399.

It is an arithmetic number, because the mean of its divisors is an integer number (10065399).

Almost surely, 2^20130797 is an apocalyptic number.

It is an amenable number.

20130797 is a deficient number, since it is larger than the sum of its proper divisors (1).

20130797 is an equidigital number, since it uses as much as digits as its factorization.

20130797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 20130797 is about 4486.7356730701. The cubic root of 20130797 is about 272.0322058535.

Adding to 20130797 its reverse (79703102), we get a palindrome (99833899).

The spelling of 20130797 in words is "twenty million, one hundred thirty thousand, seven hundred ninety-seven".