1213213413 has 12 divisors (see below), whose sum is σ = 1633518240. Its totient is φ = 800935416.

The previous prime is 1213213409. The next prime is 1213213429. The reversal of 1213213413 is 3143123121.

It is not a de Polignac number, because 1213213413 - 2² = 1213213409 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1213213413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213213013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12768 + ... + 50886.

It is an arithmetic number, because the mean of its divisors is an integer number (136126520).

Almost surely, 2^1213213413 is an apocalyptic number.

It is an amenable number.

1213213413 is a deficient number, since it is larger than the sum of its proper divisors (420304827).

1213213413 is an equidigital number, since it uses as much as digits as its factorization.

1213213413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38328 (or 38225 counting only the distinct ones).

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

The square root of 1213213413 is about 34831.2132002318. The cubic root of 1213213413 is about 1066.5447142586.

Adding to 1213213413 its reverse (3143123121), we get a palindrome (4356336534).

The spelling of 1213213413 in words is "one billion, two hundred thirteen million, two hundred thirteen thousand, four hundred thirteen".