31204412322421 has 8 divisors (see below), whose sum is σ = 33604888620800. Its totient is φ = 28803955579632.

The previous prime is 31204412322409. The next prime is 31204412322481. The reversal of 31204412322421 is 12422321440213.

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 31204412322421 - 2³⁹ = 30654656508533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31204412322481) 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, 1487121 + ... + 8038678.

It is an arithmetic number, because the mean of its divisors is an integer number (4200611077600).

Almost surely, 2^{31204412322421} is an apocalyptic number.

It is an amenable number.

31204412322421 is a deficient number, since it is larger than the sum of its proper divisors (2400476298379).

31204412322421 is a wasteful number, since it uses less digits than its factorization.

31204412322421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9777795.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 31204412322421 its reverse (12422321440213), we get a palindrome (43626733762634).

The spelling of 31204412322421 in words is "thirty-one trillion, two hundred four billion, four hundred twelve million, three hundred twenty-two thousand, four hundred twenty-one".