1213344735 has 32 divisors (see below), whose sum is σ = 1979458560. Its totient is φ = 634473600.

The previous prime is 1213344733. The next prime is 1213344749. The reversal of 1213344735 is 5374433121.

It is a happy number.

1213344735 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1213344735 - 2¹ = 1213344733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1213344696 and 1213344705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213344733) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 379845 + ... + 383025.

It is an arithmetic number, because the mean of its divisors is an integer number (61858080).

Almost surely, 2^1213344735 is an apocalyptic number.

1213344735 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1213344735 is a deficient number, since it is larger than the sum of its proper divisors (766113825).

1213344735 is a wasteful number, since it uses less digits than its factorization.

1213344735 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3679.

The product of its digits is 30240, while the sum is 33.

The square root of 1213344735 is about 34833.0982687443. The cubic root of 1213344735 is about 1066.5831949112.

Adding to 1213344735 its reverse (5374433121), we get a palindrome (6587777856).

The spelling of 1213344735 in words is "one billion, two hundred thirteen million, three hundred forty-four thousand, seven hundred thirty-five".