7291212823 has 2 divisors, whose sum is σ = 7291212824. Its totient is φ = 7291212822.

The previous prime is 7291212811. The next prime is 7291212833. The reversal of 7291212823 is 3282121927.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7291212823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7291212833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3645606411 + 3645606412.

It is an arithmetic number, because the mean of its divisors is an integer number (3645606412).

Almost surely, 2^7291212823 is an apocalyptic number.

7291212823 is a deficient number, since it is larger than the sum of its proper divisors (1).

7291212823 is an equidigital number, since it uses as much as digits as its factorization.

7291212823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 37.

The square root of 7291212823 is about 85388.5989052403. The cubic root of 7291212823 is about 1939.0987437881.

The spelling of 7291212823 in words is "seven billion, two hundred ninety-one million, two hundred twelve thousand, eight hundred twenty-three".