20310132310521 has 4 divisors (see below), whose sum is σ = 27080176414032. Its totient is φ = 13540088207012.

The previous prime is 20310132310459. The next prime is 20310132310607. The reversal of 20310132310521 is 12501323101302.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20310132310521 - 2¹⁰ = 20310132309497 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20310132310491 and 20310132310500.

It is not an unprimeable number, because it can be changed into a prime (20310132310621) 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, 3385022051751 + ... + 3385022051756.

It is an arithmetic number, because the mean of its divisors is an integer number (6770044103508).

Almost surely, 2^{20310132310521} is an apocalyptic number.

It is an amenable number.

20310132310521 is a deficient number, since it is larger than the sum of its proper divisors (6770044103511).

20310132310521 is an equidigital number, since it uses as much as digits as its factorization.

20310132310521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6770044103510.

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 20310132310521 its reverse (12501323101302), we get a palindrome (32811455411823).

The spelling of 20310132310521 in words is "twenty trillion, three hundred ten billion, one hundred thirty-two million, three hundred ten thousand, five hundred twenty-one".