10020321231 has 16 divisors (see below), whose sum is σ = 13517290080. Its totient is φ = 6601858560.

The previous prime is 10020321173. The next prime is 10020321263. The reversal of 10020321231 is 13212302001.

It is not a de Polignac number, because 10020321231 - 2¹⁵ = 10020288463 is a prime.

It is a super-2 number, since 2×10020321231² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10020321231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020321431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 600801 + ... + 617253.

It is an arithmetic number, because the mean of its divisors is an integer number (844830630).

Almost surely, 2^10020321231 is an apocalyptic number.

10020321231 is a deficient number, since it is larger than the sum of its proper divisors (3496968849).

10020321231 is a wasteful number, since it uses less digits than its factorization.

10020321231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18826.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 10020321231 its reverse (13212302001), we get a palindrome (23232623232).

The spelling of 10020321231 in words is "ten billion, twenty million, three hundred twenty-one thousand, two hundred thirty-one".