10020321331 has 4 divisors (see below), whose sum is σ = 10021169664. Its totient is φ = 10019473000.

The previous prime is 10020321323. The next prime is 10020321361. The reversal of 10020321331 is 13312302001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13312302001 = 3709 ⋅3589189.

It is a cyclic number.

It is not a de Polignac number, because 10020321331 - 2³ = 10020321323 is a prime.

It is a super-2 number, since 2×10020321331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10020321361) 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, 406195 + ... + 430156.

It is an arithmetic number, because the mean of its divisors is an integer number (2505292416).

Almost surely, 2^10020321331 is an apocalyptic number.

10020321331 is a deficient number, since it is larger than the sum of its proper divisors (848333).

10020321331 is an equidigital number, since it uses as much as digits as its factorization.

10020321331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848332.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 10020321331 its reverse (13312302001), we get a palindrome (23332623332).

The spelling of 10020321331 in words is "ten billion, twenty million, three hundred twenty-one thousand, three hundred thirty-one".