1211696713 has 4 divisors (see below), whose sum is σ = 1221237760. Its totient is φ = 1202155668.

The previous prime is 1211696711. The next prime is 1211696719. The reversal of 1211696713 is 3176961121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1211696713 - 2¹ = 1211696711 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211696711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4770333 + ... + 4770586.

It is an arithmetic number, because the mean of its divisors is an integer number (305309440).

Almost surely, 2^1211696713 is an apocalyptic number.

It is an amenable number.

1211696713 is a deficient number, since it is larger than the sum of its proper divisors (9541047).

1211696713 is an equidigital number, since it uses as much as digits as its factorization.

1211696713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9541046.

The product of its digits is 13608, while the sum is 37.

The square root of 1211696713 is about 34809.4342527999. The cubic root of 1211696713 is about 1066.1000815961.

The spelling of 1211696713 in words is "one billion, two hundred eleven million, six hundred ninety-six thousand, seven hundred thirteen".