20031153 has 8 divisors (see below), whose sum is σ = 26776416. Its totient is φ = 13320000.

The previous prime is 20031139. The next prime is 20031169. The reversal of 20031153 is 35113002.

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 20031153 - 2²⁴ = 3253937 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20031103) 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, 7123 + ... + 9528.

It is an arithmetic number, because the mean of its divisors is an integer number (3347052).

Almost surely, 2^20031153 is an apocalyptic number.

It is an amenable number.

20031153 is a deficient number, since it is larger than the sum of its proper divisors (6745263).

20031153 is a wasteful number, since it uses less digits than its factorization.

20031153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17055.

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

The square root of 20031153 is about 4475.6176110119. The cubic root of 20031153 is about 271.5826256325.

Adding to 20031153 its reverse (35113002), we get a palindrome (55144155).

The spelling of 20031153 in words is "twenty million, thirty-one thousand, one hundred fifty-three".