1213141343 has 4 divisors (see below), whose sum is σ = 1233028968. Its totient is φ = 1193253720.

The previous prime is 1213141331. The next prime is 1213141361. The reversal of 1213141343 is 3431413121.

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 1213141343 - 2²⁰ = 1212092767 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 (1213141043) 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, 9943721 + ... + 9943842.

It is an arithmetic number, because the mean of its divisors is an integer number (308257242).

Almost surely, 2^1213141343 is an apocalyptic number.

1213141343 is a deficient number, since it is larger than the sum of its proper divisors (19887625).

1213141343 is an equidigital number, since it uses as much as digits as its factorization.

1213141343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19887624.

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

The square root of 1213141343 is about 34830.1786242907. The cubic root of 1213141343 is about 1066.5235947538.

Adding to 1213141343 its reverse (3431413121), we get a palindrome (4644554464).

The spelling of 1213141343 in words is "one billion, two hundred thirteen million, one hundred forty-one thousand, three hundred forty-three".