731063261 has 4 divisors (see below), whose sum is σ = 734284032. Its totient is φ = 727842492.

The previous prime is 731063243. The next prime is 731063287. The reversal of 731063261 is 162360137.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-731063261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731063761) 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, 1610045 + ... + 1610498.

It is an arithmetic number, because the mean of its divisors is an integer number (183571008).

Almost surely, 2^731063261 is an apocalyptic number.

It is an amenable number.

731063261 is a deficient number, since it is larger than the sum of its proper divisors (3220771).

731063261 is a wasteful number, since it uses less digits than its factorization.

731063261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3220770.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 731063261 is about 27038.1815401850. The cubic root of 731063261 is about 900.8482788197.

It can be divided in two parts, 73106 and 3261, that added together give a palindrome (76367).

The spelling of 731063261 in words is "seven hundred thirty-one million, sixty-three thousand, two hundred sixty-one".