706421231 has 2 divisors, whose sum is σ = 706421232. Its totient is φ = 706421230.

The previous prime is 706421207. The next prime is 706421251. The reversal of 706421231 is 132124607.

It is a strong prime.

It is an emirp because it is prime and its reverse (132124607) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 706421231 - 2¹⁰ = 706420207 is a prime.

It is a super-2 number, since 2×706421231² = 998061911215110722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 706421231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (706421251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 353210615 + 353210616.

It is an arithmetic number, because the mean of its divisors is an integer number (353210616).

Almost surely, 2^706421231 is an apocalyptic number.

706421231 is a deficient number, since it is larger than the sum of its proper divisors (1).

706421231 is an equidigital number, since it uses as much as digits as its factorization.

706421231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 706421231 is about 26578.5859480899. The cubic root of 706421231 is about 890.6107120080.

Adding to 706421231 its reverse (132124607), we get a palindrome (838545838).

The spelling of 706421231 in words is "seven hundred six million, four hundred twenty-one thousand, two hundred thirty-one".