5211213691 has 2 divisors, whose sum is σ = 5211213692. Its totient is φ = 5211213690.

The previous prime is 5211213653. The next prime is 5211213727. The reversal of 5211213691 is 1963121125.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5211213691 - 2¹⁹ = 5210689403 is a prime.

It is not a weakly prime, because it can be changed into another prime (5211213191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2605606845 + 2605606846.

It is an arithmetic number, because the mean of its divisors is an integer number (2605606846).

Almost surely, 2^5211213691 is an apocalyptic number.

5211213691 is a deficient number, since it is larger than the sum of its proper divisors (1).

5211213691 is an equidigital number, since it uses as much as digits as its factorization.

5211213691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3240, while the sum is 31.

The square root of 5211213691 is about 72188.7365937374. The cubic root of 5211213691 is about 1733.7226675436.

The spelling of 5211213691 in words is "five billion, two hundred eleven million, two hundred thirteen thousand, six hundred ninety-one".