1005145231243 has 4 divisors (see below), whose sum is σ = 1011311766568. Its totient is φ = 998978695920.

The previous prime is 1005145231219. The next prime is 1005145231249. The reversal of 1005145231243 is 3421325415001.

1005145231243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1005145231243 - 2¹³ = 1005145223051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1005145231249) 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, 3083267418 + ... + 3083267743.

It is an arithmetic number, because the mean of its divisors is an integer number (252827941642).

Almost surely, 2^{1005145231243} is an apocalyptic number.

1005145231243 is a deficient number, since it is larger than the sum of its proper divisors (6166535325).

1005145231243 is an equidigital number, since it uses as much as digits as its factorization.

1005145231243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6166535324.

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 1005145231243 in words is "one trillion, five billion, one hundred forty-five million, two hundred thirty-one thousand, two hundred forty-three".