31100020001321 has 8 divisors (see below), whose sum is σ = 31274133242400. Its totient is φ = 30925910872960.

The previous prime is 31100020001299. The next prime is 31100020001357. The reversal of 31100020001321 is 12310002000113.

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

It is a cyclic number.

It is not a de Polignac number, because 31100020001321 - 2¹⁰ = 31100020000297 is a prime.

It is a super-2 number, since 2×31100020001321² (a number of 28 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 = 31100020001296 and 31100020001305.

It is not an unprimeable number, because it can be changed into a prime (31100020001021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14819786 + ... + 16787676.

It is an arithmetic number, because the mean of its divisors is an integer number (3909266655300).

Almost surely, 2^{31100020001321} is an apocalyptic number.

It is an amenable number.

31100020001321 is a deficient number, since it is larger than the sum of its proper divisors (174113241079).

31100020001321 is a wasteful number, since it uses less digits than its factorization.

31100020001321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2056359.

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

Adding to 31100020001321 its reverse (12310002000113), we get a palindrome (43410022001434).

The spelling of 31100020001321 in words is "thirty-one trillion, one hundred billion, twenty million, one thousand, three hundred twenty-one".