20130349 has 2 divisors, whose sum is σ = 20130350. Its totient is φ = 20130348.

The previous prime is 20130343. The next prime is 20130371. The reversal of 20130349 is 94303102.

It is an a-pointer prime, because the next prime (20130371) can be obtained adding 20130349 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20088324 + 42025 = 4482^2 + 205^2 .

It is a cyclic number.

It is not a de Polignac number, because 20130349 - 2¹¹ = 20128301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20130343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065174 + 10065175.

It is an arithmetic number, because the mean of its divisors is an integer number (10065175).

Almost surely, 2^20130349 is an apocalyptic number.

It is an amenable number.

20130349 is a deficient number, since it is larger than the sum of its proper divisors (1).

20130349 is an equidigital number, since it uses as much as digits as its factorization.

20130349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 20130349 is about 4486.6857478544. The cubic root of 20130349 is about 272.0301878620.

The spelling of 20130349 in words is "twenty million, one hundred thirty thousand, three hundred forty-nine".