31222422421 has 8 divisors (see below), whose sum is σ = 33337592640. Its totient is φ = 29170391712.

The previous prime is 31222422409. The next prime is 31222422431. The reversal of 31222422421 is 12422422213.

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 31222422421 - 2⁵ = 31222422389 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 (31222422401) 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, 15783856 + ... + 15785833.

It is an arithmetic number, because the mean of its divisors is an integer number (4167199080).

Almost surely, 2^31222422421 is an apocalyptic number.

It is an amenable number.

31222422421 is a deficient number, since it is larger than the sum of its proper divisors (2115170219).

31222422421 is a wasteful number, since it uses less digits than its factorization.

31222422421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31569755.

The product of its digits is 3072, while the sum is 25.

Adding to 31222422421 its reverse (12422422213), we get a palindrome (43644844634).

The spelling of 31222422421 in words is "thirty-one billion, two hundred twenty-two million, four hundred twenty-two thousand, four hundred twenty-one".