1320222031 has 2 divisors, whose sum is σ = 1320222032. Its totient is φ = 1320222030.

The previous prime is 1320221999. The next prime is 1320222047. The reversal of 1320222031 is 1302220231.

It is an a-pointer prime, because the next prime (1320222047) can be obtained adding 1320222031 to its sum of digits (16).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1320222031 - 2⁵ = 1320221999 is a prime.

It is a super-2 number, since 2×1320222031² = 3485972422275529922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1320221996 and 1320222014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320222131) 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 as a sum of consecutive naturals, namely, 660111015 + 660111016.

It is an arithmetic number, because the mean of its divisors is an integer number (660111016).

Almost surely, 2^1320222031 is an apocalyptic number.

1320222031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320222031 is an equidigital number, since it uses as much as digits as its factorization.

1320222031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1320222031 is about 36334.8597217603. The cubic root of 1320222031 is about 1097.0228119416.

Adding to 1320222031 its reverse (1302220231), we get a palindrome (2622442262).

The spelling of 1320222031 in words is "one billion, three hundred twenty million, two hundred twenty-two thousand, thirty-one".