20312853 has 16 divisors (see below), whose sum is σ = 29768256. Its totient is φ = 12218240.

The previous prime is 20312837. The next prime is 20312861. The reversal of 20312853 is 35821302.

It is a cyclic number.

It is not a de Polignac number, because 20312853 - 2⁴ = 20312837 is a prime.

It is a super-2 number, since 2×20312853² = 825223993999218, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2275 + ... + 6767.

It is an arithmetic number, because the mean of its divisors is an integer number (1860516).

Almost surely, 2^20312853 is an apocalyptic number.

It is an amenable number.

20312853 is a deficient number, since it is larger than the sum of its proper divisors (9455403).

20312853 is a wasteful number, since it uses less digits than its factorization.

20312853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4644.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 20312853 is about 4506.9782559937. The cubic root of 20312853 is about 272.8498013169.

It can be divided in two parts, 2031 and 2853, that added together give a palindrome (4884).

The spelling of 20312853 in words is "twenty million, three hundred twelve thousand, eight hundred fifty-three".