1065203243 has 4 divisors (see below), whose sum is σ = 1147141968. Its totient is φ = 983264520.

The previous prime is 1065203233. The next prime is 1065203261. The reversal of 1065203243 is 3423025601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3423025601 = 233 ⋅14691097.

It is a cyclic number.

It is not a de Polignac number, because 1065203243 - 2²⁰ = 1064154667 is a prime.

It is a super-2 number, since 2×1065203243² = 2269315897795434098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1065203233) 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, 40969343 + ... + 40969368.

It is an arithmetic number, because the mean of its divisors is an integer number (286785492).

Almost surely, 2^1065203243 is an apocalyptic number.

1065203243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1065203243 is a deficient number, since it is larger than the sum of its proper divisors (81938725).

1065203243 is an equidigital number, since it uses as much as digits as its factorization.

1065203243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81938724.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 1065203243 is about 32637.4515396040. The cubic root of 1065203243 is about 1021.2784312725.

Adding to 1065203243 its reverse (3423025601), we get a palindrome (4488228844).

The spelling of 1065203243 in words is "one billion, sixty-five million, two hundred three thousand, two hundred forty-three".