1021513223 has 2 divisors, whose sum is σ = 1021513224. Its totient is φ = 1021513222.

The previous prime is 1021513217. The next prime is 1021513231. The reversal of 1021513223 is 3223151201.

1021513223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1021513223 - 2⁸ = 1021512967 is a prime.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 1021513195 and 1021513204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021513123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510756611 + 510756612.

It is an arithmetic number, because the mean of its divisors is an integer number (510756612).

Almost surely, 2^1021513223 is an apocalyptic number.

1021513223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021513223 is an equidigital number, since it uses as much as digits as its factorization.

1021513223 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 20.

The square root of 1021513223 is about 31961.1204903708. The cubic root of 1021513223 is about 1007.1202559607.

Adding to 1021513223 its reverse (3223151201), we get a palindrome (4244664424).

The spelling of 1021513223 in words is "one billion, twenty-one million, five hundred thirteen thousand, two hundred twenty-three".