31301113011221 has 8 divisors (see below), whose sum is σ = 31495232356704. Its totient is φ = 31107019129200.

The previous prime is 31301113011211. The next prime is 31301113011239. The reversal of 31301113011221 is 12211031110313.

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 31301113011221 - 2¹⁰ = 31301113010197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31301113011193 and 31301113011202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31301113011211) 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, 3896771 + ... + 8819696.

It is an arithmetic number, because the mean of its divisors is an integer number (3936904044588).

Almost surely, 2^{31301113011221} is an apocalyptic number.

It is an amenable number.

31301113011221 is a deficient number, since it is larger than the sum of its proper divisors (194119345483).

31301113011221 is a wasteful number, since it uses less digits than its factorization.

31301113011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12731731.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 31301113011221 its reverse (12211031110313), we get a palindrome (43512144121534).

The spelling of 31301113011221 in words is "thirty-one trillion, three hundred one billion, one hundred thirteen million, eleven thousand, two hundred twenty-one".