10021231031 has 16 divisors (see below), whose sum is σ = 12194688000. Its totient is φ = 8216158104.

The previous prime is 10021231019. The next prime is 10021231127. The reversal of 10021231031 is 13013212001.

It is a de Polignac number, because none of the positive numbers 2^k-10021231031 is a prime.

It is a super-2 number, since 2×10021231031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10021230997 and 10021231015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021231331) 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, 627251 + ... + 643028.

It is an arithmetic number, because the mean of its divisors is an integer number (762168000).

Almost surely, 2^10021231031 is an apocalyptic number.

10021231031 is a deficient number, since it is larger than the sum of its proper divisors (2173456969).

10021231031 is an equidigital number, since it uses as much as digits as its factorization.

10021231031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270323 (or 1270309 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 10021231031 its reverse (13013212001), we get a palindrome (23034443032).

The spelling of 10021231031 in words is "ten billion, twenty-one million, two hundred thirty-one thousand, thirty-one".