20653031 has 8 divisors (see below), whose sum is σ = 23631360. Its totient is φ = 17681688.

The previous prime is 20653007. The next prime is 20653063. The reversal of 20653031 is 13035602.

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

It is a cyclic number.

It is not a de Polignac number, because 20653031 - 2⁶ = 20652967 is a prime.

It is a super-2 number, since 2×20653031² = 853095378973922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20652994 and 20653012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20653001) 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, 9110 + ... + 11148.

It is an arithmetic number, because the mean of its divisors is an integer number (2953920).

Almost surely, 2^20653031 is an apocalyptic number.

20653031 is a deficient number, since it is larger than the sum of its proper divisors (2978329).

20653031 is a wasteful number, since it uses less digits than its factorization.

20653031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3493.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 20653031 is about 4544.5605948210. The cubic root of 20653031 is about 274.3645094517.

Adding to 20653031 its reverse (13035602), we get a palindrome (33688633).

The spelling of 20653031 in words is "twenty million, six hundred fifty-three thousand, thirty-one".