1031220319 has 2 divisors, whose sum is σ = 1031220320. Its totient is φ = 1031220318.

The previous prime is 1031220313. The next prime is 1031220353. The reversal of 1031220319 is 9130221301.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1031220319 - 2⁵ = 1031220287 is a prime.

It is a super-2 number, since 2×1031220319² = 2126830692636923522, 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 1031220319.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1031220313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515610159 + 515610160.

It is an arithmetic number, because the mean of its divisors is an integer number (515610160).

Almost surely, 2^1031220319 is an apocalyptic number.

1031220319 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031220319 is an equidigital number, since it uses as much as digits as its factorization.

1031220319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 1031220319 is about 32112.6193107943. The cubic root of 1031220319 is about 1010.3003122912.

The spelling of 1031220319 in words is "one billion, thirty-one million, two hundred twenty thousand, three hundred nineteen".