1211231234 has 16 divisors (see below), whose sum is σ = 1826457336. Its totient is φ = 602419200.

The previous prime is 1211231233. The next prime is 1211231243. The reversal of 1211231234 is 4321321121.

It can be written as a sum of positive squares in 4 ways, for example, as 1196814025 + 14417209 = 34595^2 + 3797^2 .

It is a super-2 number, since 2×1211231234² = 2934162204434325512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1211231233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 544244 + ... + 546464.

Almost surely, 2^1211231234 is an apocalyptic number.

1211231234 is a deficient number, since it is larger than the sum of its proper divisors (615226102).

1211231234 is a wasteful number, since it uses less digits than its factorization.

1211231234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3541.

The product of its digits is 288, while the sum is 20.

The square root of 1211231234 is about 34802.7475064829. The cubic root of 1211231234 is about 1065.9635483219.

Adding to 1211231234 its reverse (4321321121), we get a palindrome (5532552355).

The spelling of 1211231234 in words is "one billion, two hundred eleven million, two hundred thirty-one thousand, two hundred thirty-four".