1213534716 has 24 divisors (see below), whose sum is σ = 2834536320. Its totient is φ = 404089392.

The previous prime is 1213534703. The next prime is 1213534723. The reversal of 1213534716 is 6174353121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40686 + ... + 63893.

It is an arithmetic number, because the mean of its divisors is an integer number (118105680).

Almost surely, 2^1213534716 is an apocalyptic number.

It is an amenable number.

1213534716 is an abundant number, since it is smaller than the sum of its proper divisors (1621001604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213534716 is a wasteful number, since it uses less digits than its factorization.

1213534716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105553 (or 105551 counting only the distinct ones).

The product of its digits is 15120, while the sum is 33.

The square root of 1213534716 is about 34835.8251804087. The cubic root of 1213534716 is about 1066.6388592143.

Adding to 1213534716 its reverse (6174353121), we get a palindrome (7387887837).

The spelling of 1213534716 in words is "one billion, two hundred thirteen million, five hundred thirty-four thousand, seven hundred sixteen".