31221421223441 has 8 divisors (see below), whose sum is σ = 32239092711168. Its totient is φ = 30204407790000.

The previous prime is 31221421223431. The next prime is 31221421223453. The reversal of 31221421223441 is 14432212412213.

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 31221421223441 - 2²² = 31221417029137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31221421223398 and 31221421223407.

It is not an unprimeable number, because it can be changed into a prime (31221421223401) 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, 164417135 + ... + 164606916.

It is an arithmetic number, because the mean of its divisors is an integer number (4029886588896).

Almost surely, 2^{31221421223441} is an apocalyptic number.

31221421223441 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

31221421223441 is a deficient number, since it is larger than the sum of its proper divisors (1017671487727).

31221421223441 is a wasteful number, since it uses less digits than its factorization.

31221421223441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329027143.

The product of its digits is 18432, while the sum is 32.

Adding to 31221421223441 its reverse (14432212412213), we get a palindrome (45653633635654).

The spelling of 31221421223441 in words is "thirty-one trillion, two hundred twenty-one billion, four hundred twenty-one million, two hundred twenty-three thousand, four hundred forty-one".