1031222213 has 4 divisors (see below), whose sum is σ = 1178539680. Its totient is φ = 883904748.

The previous prime is 1031222191. The next prime is 1031222233. The reversal of 1031222213 is 3122221301.

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: 3122221301 = 113 ⋅27630277.

It is a cyclic number.

It is not a de Polignac number, because 1031222213 - 2⁶ = 1031222149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1031222191 and 1031222200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031222233) 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, 73658723 + ... + 73658736.

It is an arithmetic number, because the mean of its divisors is an integer number (294634920).

Almost surely, 2^1031222213 is an apocalyptic number.

It is an amenable number.

1031222213 is a deficient number, since it is larger than the sum of its proper divisors (147317467).

1031222213 is an equidigital number, since it uses as much as digits as its factorization.

1031222213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147317466.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1031222213 is about 32112.6488007452. The cubic root of 1031222213 is about 1010.3009308166.

Adding to 1031222213 its reverse (3122221301), we get a palindrome (4153443514).

The spelling of 1031222213 in words is "one billion, thirty-one million, two hundred twenty-two thousand, two hundred thirteen".