1145031243 has 16 divisors (see below), whose sum is σ = 1632527136. Its totient is φ = 711334400.

The previous prime is 1145031211. The next prime is 1145031259. The reversal of 1145031243 is 3421305411.

It is a happy number.

It is not a de Polignac number, because 1145031243 - 2⁵ = 1145031211 is a prime.

It is a super-2 number, since 2×1145031243² = 2622193094892250098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1145031443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105996 + ... + 116297.

It is an arithmetic number, because the mean of its divisors is an integer number (102032946).

Almost surely, 2^1145031243 is an apocalyptic number.

1145031243 is a deficient number, since it is larger than the sum of its proper divisors (487495893).

1145031243 is a wasteful number, since it uses less digits than its factorization.

1145031243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222414.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1145031243 is about 33838.3102858284. The cubic root of 1145031243 is about 1046.1784719481.

Adding to 1145031243 its reverse (3421305411), we get a palindrome (4566336654).

The spelling of 1145031243 in words is "one billion, one hundred forty-five million, thirty-one thousand, two hundred forty-three".