31320002229 has 4 divisors (see below), whose sum is σ = 41760002976. Its totient is φ = 20880001484.

The previous prime is 31320002227. The next prime is 31320002281. The reversal of 31320002229 is 92220002313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92220002313 = 3 ⋅30740000771.

It is a cyclic number.

It is not a de Polignac number, because 31320002229 - 2¹ = 31320002227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31320002199 and 31320002208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31320002227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5220000369 + ... + 5220000374.

It is an arithmetic number, because the mean of its divisors is an integer number (10440000744).

Almost surely, 2^31320002229 is an apocalyptic number.

It is an amenable number.

31320002229 is a deficient number, since it is larger than the sum of its proper divisors (10440000747).

31320002229 is a wasteful number, since it uses less digits than its factorization.

31320002229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10440000746.

The product of its (nonzero) digits is 1296, while the sum is 24.

The spelling of 31320002229 in words is "thirty-one billion, three hundred twenty million, two thousand, two hundred twenty-nine".