20310135 has 8 divisors (see below), whose sum is σ = 32496240. Its totient is φ = 10832064.

The previous prime is 20310131. The next prime is 20310137. The reversal of 20310135 is 53101302.

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 20310135 - 2² = 20310131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 1354009 = 20310135 / (2 + 0 + 3 + 1 + 0 + 1 + 3 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310131) 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, 676990 + ... + 677019.

It is an arithmetic number, because the mean of its divisors is an integer number (4062030).

Almost surely, 2^20310135 is an apocalyptic number.

20310135 is a deficient number, since it is larger than the sum of its proper divisors (12186105).

20310135 is a wasteful number, since it uses less digits than its factorization.

20310135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1354017.

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

The square root of 20310135 is about 4506.6767134996. The cubic root of 20310135 is about 272.8376310449.

Adding to 20310135 its reverse (53101302), we get a palindrome (73411437).

The spelling of 20310135 in words is "twenty million, three hundred ten thousand, one hundred thirty-five".