720327631 has 2 divisors, whose sum is σ = 720327632. Its totient is φ = 720327630.

The previous prime is 720327583. The next prime is 720327679. The reversal of 720327631 is 136723027.

It is a balanced prime because it is at equal distance from previous prime (720327583) and next prime (720327679).

It is a cyclic number.

It is not a de Polignac number, because 720327631 - 2²⁹ = 183456719 is a prime.

It is a super-3 number, since 3×720327631³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 720327593 and 720327602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (720327131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360163815 + 360163816.

It is an arithmetic number, because the mean of its divisors is an integer number (360163816).

Almost surely, 2^720327631 is an apocalyptic number.

720327631 is a deficient number, since it is larger than the sum of its proper divisors (1).

720327631 is an equidigital number, since it uses as much as digits as its factorization.

720327631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 31.

The square root of 720327631 is about 26838.9200788705. The cubic root of 720327631 is about 896.4168775031.

The spelling of 720327631 in words is "seven hundred twenty million, three hundred twenty-seven thousand, six hundred thirty-one".