20031253 has 8 divisors (see below), whose sum is σ = 23137920. Its totient is φ = 17138880.

The previous prime is 20031223. The next prime is 20031281. The reversal of 20031253 is 35213002.

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

It is not a de Polignac number, because 20031253 - 2¹³ = 20023061 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 (20031223) 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, 53373 + ... + 53746.

It is an arithmetic number, because the mean of its divisors is an integer number (2892240).

Almost surely, 2^20031253 is an apocalyptic number.

It is an amenable number.

20031253 is a deficient number, since it is larger than the sum of its proper divisors (3106667).

20031253 is a wasteful number, since it uses less digits than its factorization.

20031253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107147.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 20031253 is about 4475.6287826405. The cubic root of 20031253 is about 271.5830775656.

Adding to 20031253 its reverse (35213002), we get a palindrome (55244255).

The spelling of 20031253 in words is "twenty million, thirty-one thousand, two hundred fifty-three".