1123413143 has 4 divisors (see below), whose sum is σ = 1123635240. Its totient is φ = 1123191048.

The previous prime is 1123413139. The next prime is 1123413199. The reversal of 1123413143 is 3413143211.

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 1123413143 - 2² = 1123413139 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 (1123413103) 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, 103280 + ... + 113637.

It is an arithmetic number, because the mean of its divisors is an integer number (280908810).

Almost surely, 2^1123413143 is an apocalyptic number.

1123413143 is a deficient number, since it is larger than the sum of its proper divisors (222097).

1123413143 is an equidigital number, since it uses as much as digits as its factorization.

1123413143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222096.

The product of its digits is 864, while the sum is 23.

The square root of 1123413143 is about 33517.3558473815. The cubic root of 1123413143 is about 1039.5526746726.

Adding to 1123413143 its reverse (3413143211), we get a palindrome (4536556354).

The spelling of 1123413143 in words is "one billion, one hundred twenty-three million, four hundred thirteen thousand, one hundred forty-three".