31220001113421 has 8 divisors (see below), whose sum is σ = 41655316930720. Its totient is φ = 20799009685872.

The previous prime is 31220001113381. The next prime is 31220001113437. The reversal of 31220001113421 is 12431110002213.

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

It is not a de Polignac number, because 31220001113421 - 2¹³ = 31220001105229 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 (31220001113221) 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, 3581092351 + ... + 3581101068.

It is an arithmetic number, because the mean of its divisors is an integer number (5206914616340).

Almost surely, 2^{31220001113421} is an apocalyptic number.

It is an amenable number.

31220001113421 is a deficient number, since it is larger than the sum of its proper divisors (10435315817299).

31220001113421 is a wasteful number, since it uses less digits than its factorization.

31220001113421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7162194875.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 31220001113421 its reverse (12431110002213), we get a palindrome (43651111115634).

The spelling of 31220001113421 in words is "thirty-one trillion, two hundred twenty billion, one million, one hundred thirteen thousand, four hundred twenty-one".