1382221231 has 2 divisors, whose sum is σ = 1382221232. Its totient is φ = 1382221230.

The previous prime is 1382221219. The next prime is 1382221237. The reversal of 1382221231 is 1321222831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1382221231 - 2⁵ = 1382221199 is a prime.

It is a super-2 number, since 2×1382221231² = 3821071062854310722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1382221196 and 1382221205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1382221237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 691110615 + 691110616.

It is an arithmetic number, because the mean of its divisors is an integer number (691110616).

Almost surely, 2^1382221231 is an apocalyptic number.

1382221231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1382221231 is an equidigital number, since it uses as much as digits as its factorization.

1382221231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 25.

The square root of 1382221231 is about 37178.2359855871. The cubic root of 1382221231 is about 1113.9332987728.

It can be divided in two parts, 13822 and 21231, that added together give a palindrome (35053).

The spelling of 1382221231 in words is "one billion, three hundred eighty-two million, two hundred twenty-one thousand, two hundred thirty-one".