1031231222 has 16 divisors (see below), whose sum is σ = 1774122912. Its totient is φ = 440381760.

The previous prime is 1031231209. The next prime is 1031231239. The reversal of 1031231222 is 2221321301.

It is a super-2 number, since 2×1031231222² = 2126875666455226568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1031231222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127133 + ... + 135000.

It is an arithmetic number, because the mean of its divisors is an integer number (110882682).

Almost surely, 2^1031231222 is an apocalyptic number.

1031231222 is a deficient number, since it is larger than the sum of its proper divisors (742891690).

1031231222 is a wasteful number, since it uses less digits than its factorization.

1031231222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262423.

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

The square root of 1031231222 is about 32112.7890722684. The cubic root of 1031231222 is about 1010.3038728836.

Adding to 1031231222 its reverse (2221321301), we get a palindrome (3252552523).

The spelling of 1031231222 in words is "one billion, thirty-one million, two hundred thirty-one thousand, two hundred twenty-two".