31000002224 has 10 divisors (see below), whose sum is σ = 60062504340. Its totient is φ = 15500001104.

The previous prime is 31000002223. The next prime is 31000002227. The reversal of 31000002224 is 42220000013.

It is a super-2 number, since 2×31000002224² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31000002199 and 31000002208.

It is not an unprimeable number, because it can be changed into a prime (31000002221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 968750054 + ... + 968750085.

It is an arithmetic number, because the mean of its divisors is an integer number (6006250434).

Almost surely, 2^31000002224 is an apocalyptic number.

It is an amenable number.

31000002224 is a deficient number, since it is larger than the sum of its proper divisors (29062502116).

31000002224 is a wasteful number, since it uses less digits than its factorization.

31000002224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1937500147 (or 1937500141 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

Adding to 31000002224 its reverse (42220000013), we get a palindrome (73220002237).

The spelling of 31000002224 in words is "thirty-one billion, two thousand, two hundred twenty-four".