1145424331 has 4 divisors (see below), whose sum is σ = 1145892600. Its totient is φ = 1144956064.

The previous prime is 1145424277. The next prime is 1145424341. The reversal of 1145424331 is 1334245411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1145424331 - 2⁹ = 1145423819 is a prime.

It is a super-2 number, since 2×1145424331² = 2623993796093595122, which contains 22 as substring.

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 1145424331.

It is not an unprimeable number, because it can be changed into a prime (1145424341) 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, 230446 + ... + 235363.

It is an arithmetic number, because the mean of its divisors is an integer number (286473150).

Almost surely, 2^1145424331 is an apocalyptic number.

1145424331 is a deficient number, since it is larger than the sum of its proper divisors (468269).

1145424331 is an equidigital number, since it uses as much as digits as its factorization.

1145424331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468268.

The product of its digits is 5760, while the sum is 28.

The square root of 1145424331 is about 33844.1181152649. The cubic root of 1145424331 is about 1046.2981755676.

Adding to 1145424331 its reverse (1334245411), we get a palindrome (2479669742).

The spelling of 1145424331 in words is "one billion, one hundred forty-five million, four hundred twenty-four thousand, three hundred thirty-one".