706723431 has 4 divisors (see below), whose sum is σ = 942297912. Its totient is φ = 471148952.

The previous prime is 706723429. The next prime is 706723469. The reversal of 706723431 is 134327607.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 706723431 - 2¹ = 706723429 is a prime.

It is a super-2 number, since 2×706723431² = 998916015848823522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 706723392 and 706723401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (706723471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117787236 + ... + 117787241.

It is an arithmetic number, because the mean of its divisors is an integer number (235574478).

Almost surely, 2^706723431 is an apocalyptic number.

706723431 is a deficient number, since it is larger than the sum of its proper divisors (235574481).

706723431 is a wasteful number, since it uses less digits than its factorization.

706723431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235574480.

The product of its (nonzero) digits is 21168, while the sum is 33.

The square root of 706723431 is about 26584.2703680203. The cubic root of 706723431 is about 890.7376920475.

The spelling of 706723431 in words is "seven hundred six million, seven hundred twenty-three thousand, four hundred thirty-one".