20231135 has 8 divisors (see below), whose sum is σ = 24304416. Its totient is φ = 16166880.

The previous prime is 20231129. The next prime is 20231137. The reversal of 20231135 is 53113202.

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

It is a de Polignac number, because none of the positive numbers 2^k-20231135 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 (20231137) 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, 4550 + ... + 7820.

It is an arithmetic number, because the mean of its divisors is an integer number (3038052).

Almost surely, 2^20231135 is an apocalyptic number.

20231135 is a deficient number, since it is larger than the sum of its proper divisors (4073281).

20231135 is a wasteful number, since it uses less digits than its factorization.

20231135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4513.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 20231135 is about 4497.9034004745. The cubic root of 20231135 is about 272.4834207010.

Adding to 20231135 its reverse (53113202), we get a palindrome (73344337).

The spelling of 20231135 in words is "twenty million, two hundred thirty-one thousand, one hundred thirty-five".