712310321 has 4 divisors (see below), whose sum is σ = 713315700. Its totient is φ = 711304944.

The previous prime is 712310317. The next prime is 712310327. The reversal of 712310321 is 123013217.

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

It can be written as a sum of positive squares in 2 ways, for example, as 49505296 + 662805025 = 7036^2 + 25745^2 .

It is a cyclic number.

It is not a de Polignac number, because 712310321 - 2² = 712310317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 712310293 and 712310302.

It is not an unprimeable number, because it can be changed into a prime (712310327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 501626 + ... + 503043.

It is an arithmetic number, because the mean of its divisors is an integer number (178328925).

Almost surely, 2^712310321 is an apocalyptic number.

It is an amenable number.

712310321 is a deficient number, since it is larger than the sum of its proper divisors (1005379).

712310321 is a wasteful number, since it uses less digits than its factorization.

712310321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005378.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 712310321 is about 26689.1423803763. The cubic root of 712310321 is about 893.0787291285.

Adding to 712310321 its reverse (123013217), we get a palindrome (835323538).

The spelling of 712310321 in words is "seven hundred twelve million, three hundred ten thousand, three hundred twenty-one".