10031111321 has 8 divisors (see below), whose sum is σ = 12506320704. Its totient is φ = 7816450320.

The previous prime is 10031111287. The next prime is 10031111323. The reversal of 10031111321 is 12311113001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10031111321 - 2¹⁸ = 10030849177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10031111296 and 10031111305.

It is not an unprimeable number, because it can be changed into a prime (10031111323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65137010 + ... + 65137163.

It is an arithmetic number, because the mean of its divisors is an integer number (1563290088).

Almost surely, 2^10031111321 is an apocalyptic number.

10031111321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10031111321 is a deficient number, since it is larger than the sum of its proper divisors (2475209383).

10031111321 is a wasteful number, since it uses less digits than its factorization.

10031111321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130274191.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 10031111321 its reverse (12311113001), we get a palindrome (22342224322).

The spelling of 10031111321 in words is "ten billion, thirty-one million, one hundred eleven thousand, three hundred twenty-one".