1031100111321 has 16 divisors (see below), whose sum is σ = 1577459939328. Its totient is φ = 586852650000.

The previous prime is 1031100111313. The next prime is 1031100111343. The reversal of 1031100111321 is 1231110011301.

It is not a de Polignac number, because 1031100111321 - 2³ = 1031100111313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1031100111321.

It is not an unprimeable number, because it can be changed into a prime (1031100111521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97803505 + ... + 97814046.

It is an arithmetic number, because the mean of its divisors is an integer number (98591246208).

Almost surely, 2^{1031100111321} is an apocalyptic number.

It is an amenable number.

1031100111321 is a deficient number, since it is larger than the sum of its proper divisors (546359828007).

1031100111321 is a wasteful number, since it uses less digits than its factorization.

1031100111321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195617812.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 1031100111321 its reverse (1231110011301), we get a palindrome (2262210122622).

The spelling of 1031100111321 in words is "one trillion, thirty-one billion, one hundred million, one hundred eleven thousand, three hundred twenty-one".