1213234311 has 8 divisors (see below), whose sum is σ = 1618563184. Its totient is φ = 808364160.

The previous prime is 1213234283. The next prime is 1213234313. The reversal of 1213234311 is 1134323121.

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

It is not a de Polignac number, because 1213234311 - 2⁵ = 1213234279 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 (1213234313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108460 + ... + 119121.

It is an arithmetic number, because the mean of its divisors is an integer number (202320398).

Almost surely, 2^1213234311 is an apocalyptic number.

1213234311 is a deficient number, since it is larger than the sum of its proper divisors (405328873).

1213234311 is a wasteful number, since it uses less digits than its factorization.

1213234311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229361.

The product of its digits is 432, while the sum is 21.

The square root of 1213234311 is about 34831.5131884907. The cubic root of 1213234311 is about 1066.5508380846.

Adding to 1213234311 its reverse (1134323121), we get a palindrome (2347557432).

The spelling of 1213234311 in words is "one billion, two hundred thirteen million, two hundred thirty-four thousand, three hundred eleven".