1023262563 has 4 divisors (see below), whose sum is σ = 1364350088. Its totient is φ = 682175040.

The previous prime is 1023262549. The next prime is 1023262567. The reversal of 1023262563 is 3652623201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3652623201 = 3 ⋅1217541067.

It is not a de Polignac number, because 1023262563 - 2⁵ = 1023262531 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1023262563.

It is not an unprimeable number, because it can be changed into a prime (1023262567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170543758 + ... + 170543763.

It is an arithmetic number, because the mean of its divisors is an integer number (341087522).

Almost surely, 2^1023262563 is an apocalyptic number.

1023262563 is a deficient number, since it is larger than the sum of its proper divisors (341087525).

1023262563 is an equidigital number, since it uses as much as digits as its factorization.

1023262563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341087524.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 1023262563 is about 31988.4754716445. The cubic root of 1023262563 is about 1007.6948254568.

Adding to 1023262563 its reverse (3652623201), we get a palindrome (4675885764).

The spelling of 1023262563 in words is "one billion, twenty-three million, two hundred sixty-two thousand, five hundred sixty-three".