711902981 has 2 divisors, whose sum is σ = 711902982. Its totient is φ = 711902980.

The previous prime is 711902959. The next prime is 711902987. The reversal of 711902981 is 189209117.

711902981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 390418081 + 321484900 = 19759^2 + 17930^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-711902981 is a prime.

It is a super-2 number, since 2×711902981² = 1013611708713372722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (711902987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355951490 + 355951491.

It is an arithmetic number, because the mean of its divisors is an integer number (355951491).

Almost surely, 2^711902981 is an apocalyptic number.

It is an amenable number.

711902981 is a deficient number, since it is larger than the sum of its proper divisors (1).

711902981 is an equidigital number, since it uses as much as digits as its factorization.

711902981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 38.

The square root of 711902981 is about 26681.5100959447. The cubic root of 711902981 is about 892.9084587442.

The spelling of 711902981 in words is "seven hundred eleven million, nine hundred two thousand, nine hundred eighty-one".