1211000343 has 16 divisors (see below), whose sum is σ = 1895208960. Its totient is φ = 673297056.

The previous prime is 1211000341. The next prime is 1211000381. The reversal of 1211000343 is 3430001121.

It is not a de Polignac number, because 1211000343 - 2¹ = 1211000341 is a prime.

It is a super-2 number, since 2×1211000343² = 2933043661492235298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211000341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 778503 + ... + 780056.

It is an arithmetic number, because the mean of its divisors is an integer number (118450560).

Almost surely, 2^1211000343 is an apocalyptic number.

1211000343 is a deficient number, since it is larger than the sum of its proper divisors (684208617).

1211000343 is a wasteful number, since it uses less digits than its factorization.

1211000343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558606.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1211000343 is about 34799.4302108526. The cubic root of 1211000343 is about 1065.8958109036.

Adding to 1211000343 its reverse (3430001121), we get a palindrome (4641001464).

The spelling of 1211000343 in words is "one billion, two hundred eleven million, three hundred forty-three", and thus it is an aban number.