10031213321 has 4 divisors (see below), whose sum is σ = 10031434644. Its totient is φ = 10030992000.

The previous prime is 10031213279. The next prime is 10031213323. The reversal of 10031213321 is 12331213001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12331213001 = 271 ⋅45502631.

It can be written as a sum of positive squares in 2 ways, for example, as 8772382921 + 1258830400 = 93661^2 + 35480^2 .

It is a cyclic number.

It is not a de Polignac number, because 10031213321 - 2¹⁴ = 10031196937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10031213321.

It is not an unprimeable number, because it can be changed into a prime (10031213323) 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, 15260 + ... + 142461.

It is an arithmetic number, because the mean of its divisors is an integer number (2507858661).

Almost surely, 2^10031213321 is an apocalyptic number.

It is an amenable number.

10031213321 is a deficient number, since it is larger than the sum of its proper divisors (221323).

10031213321 is an equidigital number, since it uses as much as digits as its factorization.

10031213321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221322.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 10031213321 its reverse (12331213001), we get a palindrome (22362426322).

The spelling of 10031213321 in words is "ten billion, thirty-one million, two hundred thirteen thousand, three hundred twenty-one".