1211034340 has 12 divisors (see below), whose sum is σ = 2543172156. Its totient is φ = 484413728.

The previous prime is 1211034329. The next prime is 1211034359. The reversal of 1211034340 is 434301121.

It can be written as a sum of positive squares in 2 ways, for example, as 523860544 + 687173796 = 22888^2 + 26214^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30275839 + ... + 30275878.

It is an arithmetic number, because the mean of its divisors is an integer number (211931013).

Almost surely, 2^1211034340 is an apocalyptic number.

1211034340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211034340 is an abundant number, since it is smaller than the sum of its proper divisors (1332137816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211034340 is a wasteful number, since it uses less digits than its factorization.

1211034340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60551726 (or 60551724 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1211034340 is about 34799.9186780659. The cubic root of 1211034340 is about 1065.9057852803.

Adding to 1211034340 its reverse (434301121), we get a palindrome (1645335461).

The spelling of 1211034340 in words is "one billion, two hundred eleven million, thirty-four thousand, three hundred forty".