731261310720 has 72 divisors (see below), whose sum is σ = 2335465823376. Its totient is φ = 195003015168.

The previous prime is 731261310653. The next prime is 731261310749. The reversal of 731261310720 is 27013162137.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95212477 + ... + 95220156.

Almost surely, 2^731261310720 is an apocalyptic number.

It is an amenable number.

731261310720 is an abundant number, since it is smaller than the sum of its proper divisors (1604204512656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

731261310720 is a wasteful number, since it uses less digits than its factorization.

731261310720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190432657 (or 190432643 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 33.

Adding to 731261310720 its reverse (27013162137), we get a palindrome (758274472857).

The spelling of 731261310720 in words is "seven hundred thirty-one billion, two hundred sixty-one million, three hundred ten thousand, seven hundred twenty".