1012540343 has 4 divisors (see below), whose sum is σ = 1065831960. Its totient is φ = 959248728.

The previous prime is 1012540327. The next prime is 1012540363. The reversal of 1012540343 is 3430452101.

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 1012540343 - 2⁴ = 1012540327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012540303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26645780 + ... + 26645817.

It is an arithmetic number, because the mean of its divisors is an integer number (266457990).

Almost surely, 2^1012540343 is an apocalyptic number.

1012540343 is a deficient number, since it is larger than the sum of its proper divisors (53291617).

1012540343 is an equidigital number, since it uses as much as digits as its factorization.

1012540343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53291616.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1012540343 is about 31820.4390761661. The cubic root of 1012540343 is about 1004.1627617034.

Adding to 1012540343 its reverse (3430452101), we get a palindrome (4442992444).

The spelling of 1012540343 in words is "one billion, twelve million, five hundred forty thousand, three hundred forty-three".