1211413143 has 8 divisors (see below), whose sum is σ = 1670914800. Its totient is φ = 779760128.

The previous prime is 1211413139. The next prime is 1211413169. The reversal of 1211413143 is 3413141121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1211413143 - 2² = 1211413139 is a prime.

It is a super-3 number, since 3×1211413143³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211413123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6962058 + ... + 6962231.

It is an arithmetic number, because the mean of its divisors is an integer number (208864350).

Almost surely, 2^1211413143 is an apocalyptic number.

1211413143 is a deficient number, since it is larger than the sum of its proper divisors (459501657).

1211413143 is a wasteful number, since it uses less digits than its factorization.

1211413143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13924321.

The product of its digits is 288, while the sum is 21.

The square root of 1211413143 is about 34805.3608370894. The cubic root of 1211413143 is about 1066.0169096321.

Adding to 1211413143 its reverse (3413141121), we get a palindrome (4624554264).

The spelling of 1211413143 in words is "one billion, two hundred eleven million, four hundred thirteen thousand, one hundred forty-three".