731630533 has 4 divisors (see below), whose sum is σ = 731687148. Its totient is φ = 731573920.

The previous prime is 731630521. The next prime is 731630569. The reversal of 731630533 is 335036137.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 335036137 = 6899 ⋅48563.

It can be written as a sum of positive squares in 2 ways, for example, as 513566244 + 218064289 = 22662^2 + 14767^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-731630533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 731630495 and 731630504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731630593) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1635 + ... + 38287.

It is an arithmetic number, because the mean of its divisors is an integer number (182921787).

Almost surely, 2^731630533 is an apocalyptic number.

It is an amenable number.

731630533 is a deficient number, since it is larger than the sum of its proper divisors (56615).

731630533 is a wasteful number, since it uses less digits than its factorization.

731630533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56614.

The product of its (nonzero) digits is 17010, while the sum is 31.

The square root of 731630533 is about 27048.6697085088. The cubic root of 731630533 is about 901.0812244079.

The spelling of 731630533 in words is "seven hundred thirty-one million, six hundred thirty thousand, five hundred thirty-three".