20130357 has 8 divisors (see below), whose sum is σ = 28905184. Its totient is φ = 12387888.

The previous prime is 20130349. The next prime is 20130371. The reversal of 20130357 is 75303102.

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 20130357 - 2³ = 20130349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130457) 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, 258043 + ... + 258120.

It is an arithmetic number, because the mean of its divisors is an integer number (3613148).

Almost surely, 2^20130357 is an apocalyptic number.

It is an amenable number.

20130357 is a deficient number, since it is larger than the sum of its proper divisors (8774827).

20130357 is a wasteful number, since it uses less digits than its factorization.

20130357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516179.

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

The square root of 20130357 is about 4486.6866393810. The cubic root of 20130357 is about 272.0302238978.

Adding to 20130357 its reverse (75303102), we get a palindrome (95433459).

The spelling of 20130357 in words is "twenty million, one hundred thirty thousand, three hundred fifty-seven".