731338651 has 4 divisors (see below), whose sum is σ = 731572600. Its totient is φ = 731104704.

The previous prime is 731338649. The next prime is 731338667. The reversal of 731338651 is 156833137.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 156833137 = 2731 ⋅57427.

It is a cyclic number.

It is not a de Polignac number, because 731338651 - 2¹ = 731338649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 731338651.

It is not an unprimeable number, because it can be changed into a prime (731338151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112221 + ... + 118558.

It is an arithmetic number, because the mean of its divisors is an integer number (182893150).

Almost surely, 2^731338651 is an apocalyptic number.

731338651 is a deficient number, since it is larger than the sum of its proper divisors (233949).

731338651 is a wasteful number, since it uses less digits than its factorization.

731338651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233948.

The product of its digits is 45360, while the sum is 37.

The square root of 731338651 is about 27043.2736738731. The cubic root of 731338651 is about 900.9613805061.

The spelling of 731338651 in words is "seven hundred thirty-one million, three hundred thirty-eight thousand, six hundred fifty-one".