1121512343 has 6 divisors (see below), whose sum is σ = 1304616456. Its totient is φ = 961296252.

The previous prime is 1121512333. The next prime is 1121512363. The reversal of 1121512343 is 3432151211.

It is not a de Polignac number, because 1121512343 - 2¹⁰ = 1121511319 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 (1121512313) 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 5 ways as a sum of consecutive naturals, for example, 11443955 + ... + 11444052.

It is an arithmetic number, because the mean of its divisors is an integer number (217436076).

Almost surely, 2^1121512343 is an apocalyptic number.

1121512343 is a deficient number, since it is larger than the sum of its proper divisors (183104113).

1121512343 is an equidigital number, since it uses as much as digits as its factorization.

1121512343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22888021 (or 22888014 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 1121512343 is about 33488.9883842436. The cubic root of 1121512343 is about 1038.9660406191.

Adding to 1121512343 its reverse (3432151211), we get a palindrome (4553663554).

The spelling of 1121512343 in words is "one billion, one hundred twenty-one million, five hundred twelve thousand, three hundred forty-three".