31430033041221 has 24 divisors (see below), whose sum is σ = 49463130314240. Its totient is φ = 19720805040576.

The previous prime is 31430033041189. The next prime is 31430033041243. The reversal of 31430033041221 is 12214033003413.

It is a happy number.

31430033041221 is a `hidden beast` number, since 3 + 1 + 4 + 300 + 330 + 4 + 1 + 2 + 21 = 666.

It is not a de Polignac number, because 31430033041221 - 2⁵ = 31430033041189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31430033041021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2013963301 + ... + 2013978906.

Almost surely, 2^{31430033041221} is an apocalyptic number.

It is an amenable number.

31430033041221 is a deficient number, since it is larger than the sum of its proper divisors (18033097273019).

31430033041221 is a wasteful number, since it uses less digits than its factorization.

31430033041221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4027942250 (or 4027942227 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 31430033041221 its reverse (12214033003413), we get a palindrome (43644066044634).

The spelling of 31430033041221 in words is "thirty-one trillion, four hundred thirty billion, thirty-three million, forty-one thousand, two hundred twenty-one".