1031520223 has 2 divisors, whose sum is σ = 1031520224. Its totient is φ = 1031520222.

The previous prime is 1031520209. The next prime is 1031520229. The reversal of 1031520223 is 3220251301.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1031520223 - 2²¹ = 1029423071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1031520223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1031520229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515760111 + 515760112.

It is an arithmetic number, because the mean of its divisors is an integer number (515760112).

Almost surely, 2^1031520223 is an apocalyptic number.

1031520223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031520223 is an equidigital number, since it uses as much as digits as its factorization.

1031520223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 1031520223 is about 32117.2885374840. The cubic root of 1031520223 is about 1010.3982427824.

Adding to 1031520223 its reverse (3220251301), we get a palindrome (4251771524).

The spelling of 1031520223 in words is "one billion, thirty-one million, five hundred twenty thousand, two hundred twenty-three".