20531023210 has 8 divisors (see below), whose sum is σ = 36955841796. Its totient is φ = 8212409280.

The previous prime is 20531023181. The next prime is 20531023213. The reversal of 20531023210 is 1232013502.

It can be written as a sum of positive squares in 2 ways, for example, as 20317366521 + 213656689 = 142539^2 + 14617^2 .

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

It is not an unprimeable number, because it can be changed into a prime (20531023213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1026551151 + ... + 1026551170.

Almost surely, 2^20531023210 is an apocalyptic number.

20531023210 is a deficient number, since it is larger than the sum of its proper divisors (16424818586).

20531023210 is a wasteful number, since it uses less digits than its factorization.

20531023210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053102328.

The product of its (nonzero) digits is 360, while the sum is 19.

Adding to 20531023210 its reverse (1232013502), we get a palindrome (21763036712).

The spelling of 20531023210 in words is "twenty billion, five hundred thirty-one million, twenty-three thousand, two hundred ten".