1213244411 has 8 divisors (see below), whose sum is σ = 1332625920. Its totient is φ = 1099415592.

The previous prime is 1213244401. The next prime is 1213244429. The reversal of 1213244411 is 1144423121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213244411 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213244401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1387715 + ... + 1388588.

It is an arithmetic number, because the mean of its divisors is an integer number (166578240).

Almost surely, 2^1213244411 is an apocalyptic number.

1213244411 is a deficient number, since it is larger than the sum of its proper divisors (119381509).

1213244411 is a wasteful number, since it uses less digits than its factorization.

1213244411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2776345.

The product of its digits is 768, while the sum is 23.

The square root of 1213244411 is about 34831.6581718413. The cubic root of 1213244411 is about 1066.5537977035.

Adding to 1213244411 its reverse (1144423121), we get a palindrome (2357667532).

The spelling of 1213244411 in words is "one billion, two hundred thirteen million, two hundred forty-four thousand, four hundred eleven".